Structural, Mössbauer spectroscopic and magnetochemical investigations into EuPt5, TmPt5 and TmPt3 synthesized from platinum and gaseous lanthanide
Identifieur interne : 002022 ( Istex/Corpus ); précédent : 002021; suivant : 002023Structural, Mössbauer spectroscopic and magnetochemical investigations into EuPt5, TmPt5 and TmPt3 synthesized from platinum and gaseous lanthanide
Auteurs : M. Sauer ; S. Raetz ; V. Ohm ; M. Merkens ; C. Sauer ; D. Schmitz ; H. Schilder ; H. LuekenSource :
- Journal of Alloys and Compounds [ 0925-8388 ] ; 1997.
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Abstract
Abstract: EuPt5, TmPt5, and TmPt3 were prepared by reaction of the gaseous lanthanides with Pt at 1200, 1300, and 1500°C respectively. Structural investigations established that the former two crystallize in CaCu5-type related superstructures, the details being still under investigation. 151Eu Mössbauer spectroscopy and magnetic susceptibility measurements revealed that EuPt5 is a mixed-valent europium alloy containing both trivalent (Eu[4f6]) and intermediate-valent Eu, the latter as a dynamic mixture of the [4f6] and [4f7] configurations. The magnetochemical analysis of TmPt1 (AuCu1-type structure) on the basis of a crystal field/molecular field model disclosed trivalent Tm[4f12] with a singlet crystal field ground state and the absence of magnetic ordering (for T≥1.7K).
Url:
DOI: 10.1016/S0925-8388(96)02471-1
Links to Exploration step
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<front><div type="abstract" xml:lang="en">Abstract: EuPt5, TmPt5, and TmPt3 were prepared by reaction of the gaseous lanthanides with Pt at 1200, 1300, and 1500°C respectively. Structural investigations established that the former two crystallize in CaCu5-type related superstructures, the details being still under investigation. 151Eu Mössbauer spectroscopy and magnetic susceptibility measurements revealed that EuPt5 is a mixed-valent europium alloy containing both trivalent (Eu[4f6]) and intermediate-valent Eu, the latter as a dynamic mixture of the [4f6] and [4f7] configurations. The magnetochemical analysis of TmPt1 (AuCu1-type structure) on the basis of a crystal field/molecular field model disclosed trivalent Tm[4f12] with a singlet crystal field ground state and the absence of magnetic ordering (for T≥1.7K).</div>
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</ce:author>
<ce:author><ce:given-name>S.</ce:given-name>
<ce:surname>Raetz</ce:surname>
<ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>V.</ce:given-name>
<ce:surname>Ohm</ce:surname>
<ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>M.</ce:given-name>
<ce:surname>Merkens</ce:surname>
<ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>C.</ce:given-name>
<ce:surname>Sauer</ce:surname>
<ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>D.</ce:given-name>
<ce:surname>Schmitz</ce:surname>
<ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>H.</ce:given-name>
<ce:surname>Schilder</ce:surname>
<ce:cross-ref refid="AFF3"><ce:sup>c</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>H.</ce:given-name>
<ce:surname>Lueken</ce:surname>
<ce:cross-ref refid="COR1"><ce:sup>∗</ce:sup>
</ce:cross-ref>
<ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:affiliation id="AFF1"><ce:label>a</ce:label>
<ce:textfn>Institut für Anorganische Chemie der Technischen Hochschule Aachen, Prof._Pirlet-Str. I. D-52056 Aachen, Germany</ce:textfn>
</ce:affiliation>
<ce:affiliation id="AFF2"><ce:label>b</ce:label>
<ce:textfn>Institut für Festkörperforschung, Forschungszentrum Julich GmbH, D-52425 Jülich, Germany</ce:textfn>
</ce:affiliation>
<ce:affiliation id="AFF3"><ce:label>c</ce:label>
<ce:textfn>Fachbereich Chemieingenieurwesen der Fachhochschule Aachen, Warringer Weg, D-52074 Aachen, Germany</ce:textfn>
</ce:affiliation>
<ce:correspondence id="COR1"><ce:label>∗</ce:label>
<ce:text>Corresponding author.</ce:text>
</ce:correspondence>
</ce:author-group>
<ce:abstract><ce:section-title>Abstract</ce:section-title>
<ce:abstract-sec><ce:simple-para>EuPt<ce:inf>5</ce:inf>
, TmPt<ce:inf>5</ce:inf>
, and TmPt<ce:inf>3</ce:inf>
were prepared by reaction of the gaseous lanthanides with Pt at 1200, 1300, and 1500°C respectively. Structural investigations established that the former two crystallize in CaCu<ce:inf>5</ce:inf>
-type related superstructures, the details being still under investigation. <ce:sup loc="pre">151</ce:sup>
Eu Mössbauer spectroscopy and magnetic susceptibility measurements revealed that EuPt<ce:inf>5</ce:inf>
is a mixed-valent europium alloy containing both trivalent (Eu[4f<ce:sup>6</ce:sup>
]) and intermediate-valent Eu, the latter as a dynamic mixture of the [4f<ce:sup>6</ce:sup>
] and [4f<ce:sup>7</ce:sup>
] configurations. The magnetochemical analysis of TmPt<ce:inf>1</ce:inf>
(AuCu<ce:inf>1</ce:inf>
-type structure) on the basis of a crystal field/molecular field model disclosed trivalent Tm[4f<ce:sup>12</ce:sup>
] with a singlet crystal field ground state and the absence of magnetic ordering (for <ce:italic>T</ce:italic>
≥1.7K).</ce:simple-para>
</ce:abstract-sec>
</ce:abstract>
<ce:keywords><ce:section-title>Keywords</ce:section-title>
<ce:keyword><ce:text>Lanthanide platinum alloys</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Mixed-valence</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Magnetic susceptibility</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Mössbauer effect</ce:text>
</ce:keyword>
</ce:keywords>
</head>
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<mods version="3.6"><titleInfo><title>Structural, Mössbauer spectroscopic and magnetochemical investigations into EuPt5, TmPt5 and TmPt3 synthesized from platinum and gaseous lanthanide</title>
</titleInfo>
<titleInfo type="alternative" contentType="CDATA"><title>Structural, Mössbauer spectroscopic and magnetochemical investigations into EuPt</title>
</titleInfo>
<name type="personal"><namePart type="given">M.</namePart>
<namePart type="family">Sauer</namePart>
<affiliation>Institut für Anorganische Chemie der Technischen Hochschule Aachen, Prof._Pirlet-Str. I. D-52056 Aachen, Germany</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">S.</namePart>
<namePart type="family">Raetz</namePart>
<affiliation>Institut für Anorganische Chemie der Technischen Hochschule Aachen, Prof._Pirlet-Str. I. D-52056 Aachen, Germany</affiliation>
<role><roleTerm type="text">author</roleTerm>
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</name>
<name type="personal"><namePart type="given">V.</namePart>
<namePart type="family">Ohm</namePart>
<affiliation>Institut für Anorganische Chemie der Technischen Hochschule Aachen, Prof._Pirlet-Str. I. D-52056 Aachen, Germany</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">M.</namePart>
<namePart type="family">Merkens</namePart>
<affiliation>Institut für Anorganische Chemie der Technischen Hochschule Aachen, Prof._Pirlet-Str. I. D-52056 Aachen, Germany</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">C.</namePart>
<namePart type="family">Sauer</namePart>
<affiliation>Institut für Festkörperforschung, Forschungszentrum Julich GmbH, D-52425 Jülich, Germany</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">D.</namePart>
<namePart type="family">Schmitz</namePart>
<affiliation>Institut für Anorganische Chemie der Technischen Hochschule Aachen, Prof._Pirlet-Str. I. D-52056 Aachen, Germany</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">H.</namePart>
<namePart type="family">Schilder</namePart>
<affiliation>Fachbereich Chemieingenieurwesen der Fachhochschule Aachen, Warringer Weg, D-52074 Aachen, Germany</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">H.</namePart>
<namePart type="family">Lueken</namePart>
<affiliation>Corresponding author.</affiliation>
<affiliation>Institut für Anorganische Chemie der Technischen Hochschule Aachen, Prof._Pirlet-Str. I. D-52056 Aachen, Germany</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
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<originInfo><publisher>ELSEVIER</publisher>
<dateIssued encoding="w3cdtf">1997</dateIssued>
<copyrightDate encoding="w3cdtf">1997</copyrightDate>
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<languageTerm type="code" authority="rfc3066">en</languageTerm>
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<abstract lang="en">Abstract: EuPt5, TmPt5, and TmPt3 were prepared by reaction of the gaseous lanthanides with Pt at 1200, 1300, and 1500°C respectively. Structural investigations established that the former two crystallize in CaCu5-type related superstructures, the details being still under investigation. 151Eu Mössbauer spectroscopy and magnetic susceptibility measurements revealed that EuPt5 is a mixed-valent europium alloy containing both trivalent (Eu[4f6]) and intermediate-valent Eu, the latter as a dynamic mixture of the [4f6] and [4f7] configurations. The magnetochemical analysis of TmPt1 (AuCu1-type structure) on the basis of a crystal field/molecular field model disclosed trivalent Tm[4f12] with a singlet crystal field ground state and the absence of magnetic ordering (for T≥1.7K).</abstract>
<note>Dedicated to Professor Dr. W. Jeitschko on the occasion of his 60th birthday.</note>
<subject><genre>Keywords</genre>
<topic>Lanthanide platinum alloys</topic>
<topic>Mixed-valence</topic>
<topic>Magnetic susceptibility</topic>
<topic>Mössbauer effect</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Journal of Alloys and Compounds</title>
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<originInfo><publisher>ELSEVIER</publisher>
<dateIssued encoding="w3cdtf">19970115</dateIssued>
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<identifier type="ISSN">0925-8388</identifier>
<identifier type="PII">S0925-8388(00)X0037-0</identifier>
<part><date>19970115</date>
<detail type="volume"><number>246</number>
<caption>vol.</caption>
</detail>
<detail type="issue"><number>1–2</number>
<caption>no.</caption>
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<extent unit="issue-pages"><start>1</start>
<end>255</end>
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<extent unit="pages"><start>147</start>
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<identifier type="DOI">10.1016/S0925-8388(96)02471-1</identifier>
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