Manipulation of the Curie temperature and the magnetic moments of ultrathin Ni and Co films by Cu-capping
Identifieur interne : 000F14 ( Main/Corpus ); précédent : 000F13; suivant : 000F15Manipulation of the Curie temperature and the magnetic moments of ultrathin Ni and Co films by Cu-capping
Auteurs : F. Wilhelm ; U. Bovensiepen ; A. Scherz ; P. Poulopoulos ; A. Ney ; H. Wende ; G. Ceballos ; K. BaberschkeSource :
- Journal of Magnetism and Magnetic Materials [ 0304-8853 ] ; 2000.
Abstract
Temperature-dependent studies are performed in situ on Ni/Cu(001) and Co/Cu(001) ultrathin films by AC-susceptibility and the element-specific X-ray magnetic circular dichroism. It is shown that the growth of a Cu capping layer reduces considerably the Curie temperature by about 30–40K for Ni and 100K for Co films. The effect is practically completed after the growth of the first few monolayers of the Cu capping layer. Further growth of Cu does not alter significantly the Curie temperature. We show that the Cu-capping results in a decrease of the magnetic moments and the relation of it to the reduced Curie temperatures is discussed.
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DOI: 10.1016/S0304-8853(00)00531-X
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Scherz</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation></author><author><name sortKey="Poulopoulos, P" sort="Poulopoulos, P" uniqKey="Poulopoulos P" first="P" last="Poulopoulos">P. Poulopoulos</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: babgroup@physik.fu-berlin.de</mods:affiliation></affiliation></author><author><name sortKey="Ney, A" sort="Ney, A" uniqKey="Ney A" first="A" last="Ney">A. Ney</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation></author><author><name sortKey="Wende, H" sort="Wende, H" uniqKey="Wende H" first="H" last="Wende">H. Wende</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation></author><author><name sortKey="Ceballos, G" sort="Ceballos, G" uniqKey="Ceballos G" first="G" last="Ceballos">G. Ceballos</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation></author><author><name sortKey="Baberschke, K" sort="Baberschke, K" uniqKey="Baberschke K" first="K" last="Baberschke">K. 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Wilhelm</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation></author><author><name sortKey="Bovensiepen, U" sort="Bovensiepen, U" uniqKey="Bovensiepen U" first="U" last="Bovensiepen">U. Bovensiepen</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation></author><author><name sortKey="Scherz, A" sort="Scherz, A" uniqKey="Scherz A" first="A" last="Scherz">A. Scherz</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation></author><author><name sortKey="Poulopoulos, P" sort="Poulopoulos, P" uniqKey="Poulopoulos P" first="P" last="Poulopoulos">P. Poulopoulos</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: babgroup@physik.fu-berlin.de</mods:affiliation></affiliation></author><author><name sortKey="Ney, A" sort="Ney, A" uniqKey="Ney A" first="A" last="Ney">A. Ney</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation></author><author><name sortKey="Wende, H" sort="Wende, H" uniqKey="Wende H" first="H" last="Wende">H. Wende</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation></author><author><name sortKey="Ceballos, G" sort="Ceballos, G" uniqKey="Ceballos G" first="G" last="Ceballos">G. Ceballos</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation></author><author><name sortKey="Baberschke, K" sort="Baberschke, K" uniqKey="Baberschke K" first="K" last="Baberschke">K. Baberschke</name><affiliation><mods:affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Magnetism and Magnetic Materials</title><title level="j" type="abbrev">MAGMA</title><idno type="ISSN">0304-8853</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="2000">2000</date><biblScope unit="volume">222</biblScope><biblScope unit="issue">1–2</biblScope><biblScope unit="page" from="163">163</biblScope><biblScope unit="page" to="167">167</biblScope></imprint><idno type="ISSN">0304-8853</idno></series><idno type="istex">998CA2887B18F66ECA53BC86FBC922A468D3DB76</idno><idno type="DOI">10.1016/S0304-8853(00)00531-X</idno><idno type="PII">S0304-8853(00)00531-X</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0304-8853</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Temperature-dependent studies are performed in situ on Ni/Cu(001) and Co/Cu(001) ultrathin films by AC-susceptibility and the element-specific X-ray magnetic circular dichroism. It is shown that the growth of a Cu capping layer reduces considerably the Curie temperature by about 30–40K for Ni and 100K for Co films. The effect is practically completed after the growth of the first few monolayers of the Cu capping layer. Further growth of Cu does not alter significantly the Curie temperature. We show that the Cu-capping results in a decrease of the magnetic moments and the relation of it to the reduced Curie temperatures is discussed.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>F Wilhelm</name><affiliations><json:string>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</json:string></affiliations></json:item><json:item><name>U Bovensiepen</name><affiliations><json:string>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</json:string></affiliations></json:item><json:item><name>A Scherz</name><affiliations><json:string>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</json:string></affiliations></json:item><json:item><name>P Poulopoulos</name><affiliations><json:string>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</json:string><json:string>E-mail: babgroup@physik.fu-berlin.de</json:string></affiliations></json:item><json:item><name>A Ney</name><affiliations><json:string>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</json:string></affiliations></json:item><json:item><name>H Wende</name><affiliations><json:string>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</json:string></affiliations></json:item><json:item><name>G Ceballos</name><affiliations><json:string>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</json:string></affiliations></json:item><json:item><name>K Baberschke</name><affiliations><json:string>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>75.70.−i</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>75.30.Cr</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>78.70.Dm</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Magnetic films</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Protective overlayers</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Magnetic moments</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Curie temperature</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>X-ray absorption spectra</value></json:item></subject><language><json:string>eng</json:string></language><abstract>Temperature-dependent studies are performed in situ on Ni/Cu(001) and Co/Cu(001) ultrathin films by AC-susceptibility and the element-specific X-ray magnetic circular dichroism. It is shown that the growth of a Cu capping layer reduces considerably the Curie temperature by about 30–40K for Ni and 100K for Co films. The effect is practically completed after the growth of the first few monolayers of the Cu capping layer. Further growth of Cu does not alter significantly the Curie temperature. We show that the Cu-capping results in a decrease of the magnetic moments and the relation of it to the reduced Curie temperatures is discussed.</abstract><qualityIndicators><score>3.6</score><pdfVersion>1.2</pdfVersion><pdfPageSize>504 x 680 pts</pdfPageSize><refBibsNative>true</refBibsNative><keywordCount>8</keywordCount><abstractCharCount>640</abstractCharCount><pdfWordCount>2388</pdfWordCount><pdfCharCount>13184</pdfCharCount><pdfPageCount>5</pdfPageCount><abstractWordCount>101</abstractWordCount></qualityIndicators><title>Manipulation of the Curie temperature and the magnetic moments of ultrathin Ni and Co films by Cu-capping</title><pii><json:string>S0304-8853(00)00531-X</json:string></pii><genre><json:string>research-article</json:string></genre><host><volume>222</volume><pii><json:string>S0304-8853(00)X0128-X</json:string></pii><pages><last>167</last><first>163</first></pages><issn><json:string>0304-8853</json:string></issn><issue>1–2</issue><genre></genre><language><json:string>unknown</json:string></language><title>Journal of Magnetism and Magnetic Materials</title><publicationDate>2000</publicationDate></host><categories><wos><json:string>PHYSICS, CONDENSED MATTER</json:string><json:string>MATERIALS SCIENCE</json:string><json:string>MATERIALS SCIENCE, MULTIDISCIPLINARY</json:string></wos></categories><publicationDate>2000</publicationDate><copyrightDate>2000</copyrightDate><doi><json:string>10.1016/S0304-8853(00)00531-X</json:string></doi><id>998CA2887B18F66ECA53BC86FBC922A468D3DB76</id><fulltext><json:item><original>true</original><mimetype>application/pdf</mimetype><extension>pdf</extension><uri>https://api.istex.fr/document/998CA2887B18F66ECA53BC86FBC922A468D3DB76/fulltext/pdf</uri></json:item><json:item><original>false</original><mimetype>application/zip</mimetype><extension>zip</extension><uri>https://api.istex.fr/document/998CA2887B18F66ECA53BC86FBC922A468D3DB76/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/998CA2887B18F66ECA53BC86FBC922A468D3DB76/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a">Manipulation of the Curie temperature and the magnetic moments of ultrathin Ni and Co films by Cu-capping</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>ELSEVIER</publisher><availability><p>ELSEVIER</p></availability><date>2000</date></publicationStmt><notesStmt><note type="content">Fig. 1: AC-susceptibility of 5.1ML Ni/Cu(001) before (solid) and after (dotted line) capping with 7ML of Cu. Upon capping the maximum is reduced and it shifts towards lower temperatures. The amplitude of the external oscillatory field was 26A/m and the frequency 210Hz.</note><note type="content">Fig. 2: (a) Normalized absorption and (b) XMCD spectra at the L2,3 edges of 4ML Ni/Cu(001) before (dashed) and after (solid line) capping with 2ML Cu. The strong reduction of the XMCD signal is indicative for the decrease of the magnetic moment.</note><note type="content">Fig. 3: (a) Normalized absorption and (b) XMCD spectra at the L2,3 edges of 2 ML Co/Cu(001) before (dashed) and after (solid line) capping with 2 ML Cu.</note><note type="content">Table 1: TC of various ultrathin Ni and Co on Cu(001) films before capping with Cu. The capping layer thickness dCu and the decrease ΔTC after capping are noted. ΔTC is more pronounced in the case of d≈2 ML Co films</note></notesStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a">Manipulation of the Curie temperature and the magnetic moments of ultrathin Ni and Co films by Cu-capping</title><author><persName><forename type="first">F</forename><surname>Wilhelm</surname></persName><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation></author><author><persName><forename type="first">U</forename><surname>Bovensiepen</surname></persName><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation></author><author><persName><forename type="first">A</forename><surname>Scherz</surname></persName><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation></author><author><persName><forename type="first">P</forename><surname>Poulopoulos</surname></persName><email>babgroup@physik.fu-berlin.de</email><note type="correspondence"><p>Corresponding author. Tel.: +49-30-838-56143; fax: +49-30-838-53646</p></note><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation></author><author><persName><forename type="first">A</forename><surname>Ney</surname></persName><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation></author><author><persName><forename type="first">H</forename><surname>Wende</surname></persName><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation></author><author><persName><forename type="first">G</forename><surname>Ceballos</surname></persName><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation></author><author><persName><forename type="first">K</forename><surname>Baberschke</surname></persName><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation></author></analytic><monogr><title level="j">Journal of Magnetism and Magnetic Materials</title><title level="j" type="abbrev">MAGMA</title><idno type="pISSN">0304-8853</idno><idno type="PII">S0304-8853(00)X0128-X</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="2000"></date><biblScope unit="volume">222</biblScope><biblScope unit="issue">1–2</biblScope><biblScope unit="page" from="163">163</biblScope><biblScope unit="page" to="167">167</biblScope></imprint></monogr><idno type="istex">998CA2887B18F66ECA53BC86FBC922A468D3DB76</idno><idno type="DOI">10.1016/S0304-8853(00)00531-X</idno><idno type="PII">S0304-8853(00)00531-X</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2000</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Temperature-dependent studies are performed in situ on Ni/Cu(001) and Co/Cu(001) ultrathin films by AC-susceptibility and the element-specific X-ray magnetic circular dichroism. It is shown that the growth of a Cu capping layer reduces considerably the Curie temperature by about 30–40K for Ni and 100K for Co films. The effect is practically completed after the growth of the first few monolayers of the Cu capping layer. Further growth of Cu does not alter significantly the Curie temperature. We show that the Cu-capping results in a decrease of the magnetic moments and the relation of it to the reduced Curie temperatures is discussed.</p></abstract><textClass><keywords scheme="keyword"><list><head>PACS</head><item><term>75.70.−i</term></item><item><term>75.30.Cr</term></item><item><term>78.70.Dm</term></item></list></keywords></textClass><textClass><keywords scheme="keyword"><list><head>Keywords</head><item><term>Magnetic films</term></item><item><term>Protective overlayers</term></item><item><term>Magnetic moments</term></item><item><term>Curie temperature</term></item><item><term>X-ray absorption spectra</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2000-05-10">Received</change><change when="2000-08-09">Modified</change><change when="2000">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><original>false</original><mimetype>text/plain</mimetype><extension>txt</extension><uri>https://api.istex.fr/document/998CA2887B18F66ECA53BC86FBC922A468D3DB76/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: ce:floats; body; tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"><istex:entity SYSTEM="gr1" NDATA="IMAGE" name="gr1"></istex:entity><istex:entity SYSTEM="gr2" NDATA="IMAGE" name="gr2"></istex:entity><istex:entity SYSTEM="gr3" NDATA="IMAGE" name="gr3"></istex:entity></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla"><item-info><jid>MAGMA</jid><aid>21374</aid><ce:pii>S0304-8853(00)00531-X</ce:pii><ce:doi>10.1016/S0304-8853(00)00531-X</ce:doi><ce:copyright type="full-transfer" year="2000">Elsevier Science B.V.</ce:copyright></item-info><head><ce:title>Manipulation of the Curie temperature and the magnetic moments of ultrathin Ni and Co films by Cu-capping</ce:title><ce:author-group><ce:author><ce:given-name>F</ce:given-name><ce:surname>Wilhelm</ce:surname></ce:author><ce:author><ce:given-name>U</ce:given-name><ce:surname>Bovensiepen</ce:surname></ce:author><ce:author><ce:given-name>A</ce:given-name><ce:surname>Scherz</ce:surname></ce:author><ce:author><ce:given-name>P</ce:given-name><ce:surname>Poulopoulos</ce:surname><ce:cross-ref refid="CORR1">*</ce:cross-ref><ce:e-address>babgroup@physik.fu-berlin.de</ce:e-address></ce:author><ce:author><ce:given-name>A</ce:given-name><ce:surname>Ney</ce:surname></ce:author><ce:author><ce:given-name>H</ce:given-name><ce:surname>Wende</ce:surname></ce:author><ce:author><ce:given-name>G</ce:given-name><ce:surname>Ceballos</ce:surname></ce:author><ce:author><ce:given-name>K</ce:given-name><ce:surname>Baberschke</ce:surname></ce:author><ce:affiliation><ce:textfn>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</ce:textfn></ce:affiliation><ce:correspondence id="CORR1"><ce:label>*</ce:label><ce:text>Corresponding author. Tel.: +49-30-838-56143; fax: +49-30-838-53646</ce:text></ce:correspondence></ce:author-group><ce:date-received day="10" month="5" year="2000"></ce:date-received><ce:date-revised day="9" month="8" year="2000"></ce:date-revised><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>Temperature-dependent studies are performed in situ on Ni/Cu(0<ce:hsp sp="0.16"></ce:hsp>0<ce:hsp sp="0.16"></ce:hsp>1) and Co/Cu(0<ce:hsp sp="0.16"></ce:hsp>0<ce:hsp sp="0.16"></ce:hsp>1) ultrathin films by AC-susceptibility and the element-specific X-ray magnetic circular dichroism. It is shown that the growth of a Cu capping layer reduces considerably the Curie temperature by about 30–40<ce:hsp sp="0.16"></ce:hsp>K for Ni and 100<ce:hsp sp="0.16"></ce:hsp>K for Co films. The effect is practically completed after the growth of the first few monolayers of the Cu capping layer. Further growth of Cu does not alter significantly the Curie temperature. We show that the Cu-capping results in a decrease of the magnetic moments and the relation of it to the reduced Curie temperatures is discussed.</ce:simple-para></ce:abstract-sec></ce:abstract><ce:keywords class="pacs"><ce:section-title>PACS</ce:section-title><ce:keyword><ce:text>75.70.−i</ce:text></ce:keyword><ce:keyword><ce:text>75.30.Cr</ce:text></ce:keyword><ce:keyword><ce:text>78.70.Dm</ce:text></ce:keyword></ce:keywords><ce:keywords class="keyword"><ce:section-title>Keywords</ce:section-title><ce:keyword><ce:text>Magnetic films</ce:text></ce:keyword><ce:keyword><ce:text>Protective overlayers</ce:text></ce:keyword><ce:keyword><ce:text>Magnetic moments</ce:text></ce:keyword><ce:keyword><ce:text>Curie temperature</ce:text></ce:keyword><ce:keyword><ce:text>X-ray absorption spectra</ce:text></ce:keyword></ce:keywords></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>Manipulation of the Curie temperature and the magnetic moments of ultrathin Ni and Co films by Cu-capping</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Manipulation of the Curie temperature and the magnetic moments of ultrathin Ni and Co films by Cu-capping</title></titleInfo><name type="personal"><namePart type="given">F</namePart><namePart type="family">Wilhelm</namePart><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">U</namePart><namePart type="family">Bovensiepen</namePart><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A</namePart><namePart type="family">Scherz</namePart><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P</namePart><namePart type="family">Poulopoulos</namePart><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation><affiliation>E-mail: babgroup@physik.fu-berlin.de</affiliation><description>Corresponding author. Tel.: +49-30-838-56143; fax: +49-30-838-53646</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A</namePart><namePart type="family">Ney</namePart><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">H</namePart><namePart type="family">Wende</namePart><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G</namePart><namePart type="family">Ceballos</namePart><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">K</namePart><namePart type="family">Baberschke</namePart><affiliation>Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">2000</dateIssued><dateCaptured encoding="w3cdtf">2000-05-10</dateCaptured><dateModified encoding="w3cdtf">2000-08-09</dateModified><copyrightDate encoding="w3cdtf">2000</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">Temperature-dependent studies are performed in situ on Ni/Cu(001) and Co/Cu(001) ultrathin films by AC-susceptibility and the element-specific X-ray magnetic circular dichroism. It is shown that the growth of a Cu capping layer reduces considerably the Curie temperature by about 30–40K for Ni and 100K for Co films. The effect is practically completed after the growth of the first few monolayers of the Cu capping layer. Further growth of Cu does not alter significantly the Curie temperature. We show that the Cu-capping results in a decrease of the magnetic moments and the relation of it to the reduced Curie temperatures is discussed.</abstract><note type="content">Fig. 1: AC-susceptibility of 5.1ML Ni/Cu(001) before (solid) and after (dotted line) capping with 7ML of Cu. Upon capping the maximum is reduced and it shifts towards lower temperatures. The amplitude of the external oscillatory field was 26A/m and the frequency 210Hz.</note><note type="content">Fig. 2: (a) Normalized absorption and (b) XMCD spectra at the L2,3 edges of 4ML Ni/Cu(001) before (dashed) and after (solid line) capping with 2ML Cu. The strong reduction of the XMCD signal is indicative for the decrease of the magnetic moment.</note><note type="content">Fig. 3: (a) Normalized absorption and (b) XMCD spectra at the L2,3 edges of 2 ML Co/Cu(001) before (dashed) and after (solid line) capping with 2 ML Cu.</note><note type="content">Table 1: TC of various ultrathin Ni and Co on Cu(001) films before capping with Cu. The capping layer thickness dCu and the decrease ΔTC after capping are noted. ΔTC is more pronounced in the case of d≈2 ML Co films</note><subject><genre>PACS</genre><topic>75.70.−i</topic><topic>75.30.Cr</topic><topic>78.70.Dm</topic></subject><subject><genre>Keywords</genre><topic>Magnetic films</topic><topic>Protective overlayers</topic><topic>Magnetic moments</topic><topic>Curie temperature</topic><topic>X-ray absorption spectra</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Magnetism and Magnetic Materials</title></titleInfo><titleInfo type="abbreviated"><title>MAGMA</title></titleInfo><genre type="Journal">journal</genre><originInfo><dateIssued encoding="w3cdtf">200012</dateIssued></originInfo><identifier type="ISSN">0304-8853</identifier><identifier type="PII">S0304-8853(00)X0128-X</identifier><part><date>200012</date><detail type="volume"><number>222</number><caption>vol.</caption></detail><detail type="issue"><number>1–2</number><caption>no.</caption></detail><extent unit="issue pages"><start>1</start><end>244</end></extent><extent unit="pages"><start>163</start><end>167</end></extent></part></relatedItem><identifier type="istex">998CA2887B18F66ECA53BC86FBC922A468D3DB76</identifier><identifier type="DOI">10.1016/S0304-8853(00)00531-X</identifier><identifier type="PII">S0304-8853(00)00531-X</identifier><accessCondition type="use and reproduction" contentType="">© 2000Elsevier Science B.V.</accessCondition><recordInfo><recordContentSource>ELSEVIER</recordContentSource><recordOrigin>Elsevier Science B.V., ©2000</recordOrigin></recordInfo></mods></metadata><enrichments><istex:catWosTEI uri="https://api.istex.fr/document/998CA2887B18F66ECA53BC86FBC922A468D3DB76/enrichments/catWos"><teiHeader><profileDesc><textClass><classCode scheme="WOS">PHYSICS, CONDENSED MATTER</classCode><classCode scheme="WOS">MATERIALS SCIENCE</classCode><classCode scheme="WOS">MATERIALS SCIENCE, MULTIDISCIPLINARY</classCode></textClass></profileDesc></teiHeader></istex:catWosTEI></enrichments><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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