Investigation of (R1-xR'x)2(Fe,Co)17 powders by Mössbauer spectrometry
Identifieur interne : 000088 ( PascalFrancis/Checkpoint ); précédent : 000087; suivant : 000089Investigation of (R1-xR'x)2(Fe,Co)17 powders by Mössbauer spectrometry
Auteurs : F. Richomme [France] ; J. M. Le Breton [France] ; M. S. Ben Kraiem [Tunisie] ; A. Cheikhrouhou [Tunisie]Source :
- Journal of alloys and compounds [ 0925-8388 ] ; 2010.
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Abstract
We investigated (R1-xR'x)2Fe17 and (R1-xR'x)2Fe16Co powders by 57Fe Mössbauer spectrometry at 295 K where R and R' are Y, Nd, Sm, Gd. The spectra of the (R1-xR'x)2Fe17 compounds have been fitted with seven sextets: 18f12, 18f6, 18h12, 18h6, 9d6, 9d3 and 6c. The isomer shifts of the different Fe sites are in agreement with the Wigner-Seitz cell volumes. They do not depend on the nature of the rare earth. The hyperfine fields are consistent with the evolution of the Curie temperature. To account for substitution effects due to the partial replacement of Fe by Co, the Mössbauer spectra of the (R1-xR'x)2Fe16Co samples have been fitted with four sextets corresponding to the 18f, 18h, 9d, and 6c Fe sites, by considering the site occupancy of the Co atoms in the lattice. The evolution of the hyperfine field with the rare-earth concentration is discussed and interpreted in relation with the magnetic coupling between rare-earth and Fe magnetic sublattices, in agreement with previous magnetic measurements.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Investigation of (R<sub>1-x</sub>R'<sub>x</sub>)<sub>2</sub>(Fe,Co)<sub>17</sub> powders by Mössbauer spectrometry</title><author><name sortKey="Richomme, F" sort="Richomme, F" uniqKey="Richomme F" first="F." last="Richomme">F. Richomme</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Groupe de Physique des Matériaux, UMR CNRS 6634</s1><s2>76801 Saint-Etienne du Rouvray</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Saint-Etienne du Rouvray</settlement></placeName></affiliation></author><author><name sortKey="Le Breton, J M" sort="Le Breton, J M" uniqKey="Le Breton J" first="J. M." last="Le Breton">J. M. Le Breton</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Groupe de Physique des Matériaux, UMR CNRS 6634</s1><s2>76801 Saint-Etienne du Rouvray</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Saint-Etienne du Rouvray</settlement></placeName></affiliation></author><author><name sortKey="Ben Kraiem, M S" sort="Ben Kraiem, M S" uniqKey="Ben Kraiem M" first="M. S." last="Ben Kraiem">M. S. Ben Kraiem</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, B.P. 802</s1><s2>3018 Sfax</s2><s3>TUN</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>3018 Sfax</wicri:noRegion></affiliation></author><author><name sortKey="Cheikhrouhou, A" sort="Cheikhrouhou, A" uniqKey="Cheikhrouhou A" first="A." last="Cheikhrouhou">A. Cheikhrouhou</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, B.P. 802</s1><s2>3018 Sfax</s2><s3>TUN</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>3018 Sfax</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">10-0383238</idno><date when="2010">2010</date><idno type="stanalyst">PASCAL 10-0383238 INIST</idno><idno type="RBID">Pascal:10-0383238</idno><idno type="wicri:Area/PascalFrancis/Corpus">000085</idno><idno type="wicri:Area/PascalFrancis/Curation">000210</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000088</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000088</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Investigation of (R<sub>1-x</sub>R'<sub>x</sub>)<sub>2</sub>(Fe,Co)<sub>17</sub> powders by Mössbauer spectrometry</title><author><name sortKey="Richomme, F" sort="Richomme, F" uniqKey="Richomme F" first="F." last="Richomme">F. Richomme</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Groupe de Physique des Matériaux, UMR CNRS 6634</s1><s2>76801 Saint-Etienne du Rouvray</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Saint-Etienne du Rouvray</settlement></placeName></affiliation></author><author><name sortKey="Le Breton, J M" sort="Le Breton, J M" uniqKey="Le Breton J" first="J. M." last="Le Breton">J. M. Le Breton</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Groupe de Physique des Matériaux, UMR CNRS 6634</s1><s2>76801 Saint-Etienne du Rouvray</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Saint-Etienne du Rouvray</settlement></placeName></affiliation></author><author><name sortKey="Ben Kraiem, M S" sort="Ben Kraiem, M S" uniqKey="Ben Kraiem M" first="M. S." last="Ben Kraiem">M. S. Ben Kraiem</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, B.P. 802</s1><s2>3018 Sfax</s2><s3>TUN</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>3018 Sfax</wicri:noRegion></affiliation></author><author><name sortKey="Cheikhrouhou, A" sort="Cheikhrouhou, A" uniqKey="Cheikhrouhou A" first="A." last="Cheikhrouhou">A. Cheikhrouhou</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, B.P. 802</s1><s2>3018 Sfax</s2><s3>TUN</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>3018 Sfax</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Journal of alloys and compounds</title><title level="j" type="abbreviated">J. alloys compd.</title><idno type="ISSN">0925-8388</idno><imprint><date when="2010">2010</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of alloys and compounds</title><title level="j" type="abbreviated">J. alloys compd.</title><idno type="ISSN">0925-8388</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cobalt alloys</term><term>Curie point</term><term>Hyperfine magnetic field</term><term>Iron alloys</term><term>Isomer shift</term><term>Line splitting</term><term>Magnetization</term><term>Moessbauer effect</term><term>Rare earth alloys</term><term>Sublattices</term><term>Transition element alloys</term><term>Wigner-Seitz method</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Effet Mössbauer</term><term>Déplacement isomère</term><term>Méthode Wigner Seitz</term><term>Champ magnétique hyperfin</term><term>Point Curie</term><term>Sous réseau</term><term>Décomposition raie</term><term>Aimantation</term><term>Lanthanide alliage</term><term>Fer alliage</term><term>Cobalt alliage</term><term>Métal transition alliage</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We investigated (R<sub>1-x</sub>R'<sub>x</sub>)<sub>2</sub>Fe<sub>17</sub> and (R<sub>1-x</sub>R'<sub>x</sub>)<sub>2</sub>Fe<sub>16</sub>Co powders by <sup>57</sup>Fe Mössbauer spectrometry at 295 K where R and R' are Y, Nd, Sm, Gd. The spectra of the (R<sub>1-x</sub>R'<sub>x</sub>)<sub>2</sub>Fe<sub>17</sub> compounds have been fitted with seven sextets: 18f<sub>12</sub>, 18f<sub>6</sub>, 18h<sub>12</sub>, 18h<sub>6</sub>, 9d<sub>6</sub>, 9d<sub>3</sub> and 6c. The isomer shifts of the different Fe sites are in agreement with the Wigner-Seitz cell volumes. They do not depend on the nature of the rare earth. The hyperfine fields are consistent with the evolution of the Curie temperature. To account for substitution effects due to the partial replacement of Fe by Co, the Mössbauer spectra of the (R<sub>1-x</sub>R'<sub>x</sub>)<sub>2</sub>Fe<sub>16</sub>Co samples have been fitted with four sextets corresponding to the 18f, 18h, 9d, and 6c Fe sites, by considering the site occupancy of the Co atoms in the lattice. The evolution of the hyperfine field with the rare-earth concentration is discussed and interpreted in relation with the magnetic coupling between rare-earth and Fe magnetic sublattices, in agreement with previous magnetic measurements.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0925-8388</s0></fA01><fA03 i2="1"><s0>J. alloys compd.</s0></fA03><fA05><s2>494</s2></fA05><fA06><s2>1-2</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Investigation of (R<sub>1-x</sub>R'<sub>x</sub>)<sub>2</sub>(Fe,Co)<sub>17</sub> powders by Mössbauer spectrometry</s1></fA08><fA11 i1="01" i2="1"><s1>RICHOMME (F.)</s1></fA11><fA11 i1="02" i2="1"><s1>LE BRETON (J. M.)</s1></fA11><fA11 i1="03" i2="1"><s1>BEN KRAIEM (M. S.)</s1></fA11><fA11 i1="04" i2="1"><s1>CHEIKHROUHOU (A.)</s1></fA11><fA14 i1="01"><s1>Groupe de Physique des Matériaux, UMR CNRS 6634</s1><s2>76801 Saint-Etienne du Rouvray</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></fA14><fA14 i1="02"><s1>Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, B.P. 802</s1><s2>3018 Sfax</s2><s3>TUN</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></fA14><fA20><s1>5-10</s1></fA20><fA21><s1>2010</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>1151</s2><s5>354000191703730080</s5></fA43><fA44><s0>0000</s0><s1>© 2010 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>25 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>10-0383238</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Journal of alloys and compounds</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>We investigated (R<sub>1-x</sub>R'<sub>x</sub>)<sub>2</sub>Fe<sub>17</sub> and (R<sub>1-x</sub>R'<sub>x</sub>)<sub>2</sub>Fe<sub>16</sub>Co powders by <sup>57</sup>Fe Mössbauer spectrometry at 295 K where R and R' are Y, Nd, Sm, Gd. The spectra of the (R<sub>1-x</sub>R'<sub>x</sub>)<sub>2</sub>Fe<sub>17</sub> compounds have been fitted with seven sextets: 18f<sub>12</sub>, 18f<sub>6</sub>, 18h<sub>12</sub>, 18h<sub>6</sub>, 9d<sub>6</sub>, 9d<sub>3</sub> and 6c. The isomer shifts of the different Fe sites are in agreement with the Wigner-Seitz cell volumes. They do not depend on the nature of the rare earth. The hyperfine fields are consistent with the evolution of the Curie temperature. To account for substitution effects due to the partial replacement of Fe by Co, the Mössbauer spectra of the (R<sub>1-x</sub>R'<sub>x</sub>)<sub>2</sub>Fe<sub>16</sub>Co samples have been fitted with four sextets corresponding to the 18f, 18h, 9d, and 6c Fe sites, by considering the site occupancy of the Co atoms in the lattice. The evolution of the hyperfine field with the rare-earth concentration is discussed and interpreted in relation with the magnetic coupling between rare-earth and Fe magnetic sublattices, in agreement with previous magnetic measurements.</s0></fC01><fC02 i1="01" i2="3"><s0>001B70F80</s0></fC02><fC03 i1="01" i2="3" l="FRE"><s0>Effet Mössbauer</s0><s5>02</s5></fC03><fC03 i1="01" i2="3" l="ENG"><s0>Moessbauer effect</s0><s5>02</s5></fC03><fC03 i1="02" i2="3" l="FRE"><s0>Déplacement isomère</s0><s5>03</s5></fC03><fC03 i1="02" i2="3" l="ENG"><s0>Isomer shift</s0><s5>03</s5></fC03><fC03 i1="03" i2="3" l="FRE"><s0>Méthode Wigner Seitz</s0><s5>04</s5></fC03><fC03 i1="03" i2="3" l="ENG"><s0>Wigner-Seitz method</s0><s5>04</s5></fC03><fC03 i1="04" i2="X" l="FRE"><s0>Champ magnétique hyperfin</s0><s5>05</s5></fC03><fC03 i1="04" i2="X" l="ENG"><s0>Hyperfine magnetic field</s0><s5>05</s5></fC03><fC03 i1="04" i2="X" l="SPA"><s0>Campo magnético hiperfino</s0><s5>05</s5></fC03><fC03 i1="05" i2="3" l="FRE"><s0>Point Curie</s0><s5>06</s5></fC03><fC03 i1="05" i2="3" l="ENG"><s0>Curie point</s0><s5>06</s5></fC03><fC03 i1="06" i2="3" l="FRE"><s0>Sous réseau</s0><s5>07</s5></fC03><fC03 i1="06" i2="3" l="ENG"><s0>Sublattices</s0><s5>07</s5></fC03><fC03 i1="07" i2="3" l="FRE"><s0>Décomposition raie</s0><s5>08</s5></fC03><fC03 i1="07" i2="3" l="ENG"><s0>Line splitting</s0><s5>08</s5></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Aimantation</s0><s5>09</s5></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Magnetization</s0><s5>09</s5></fC03><fC03 i1="09" i2="3" l="FRE"><s0>Lanthanide alliage</s0><s5>12</s5></fC03><fC03 i1="09" i2="3" l="ENG"><s0>Rare earth alloys</s0><s5>12</s5></fC03><fC03 i1="10" i2="3" l="FRE"><s0>Fer alliage</s0><s5>15</s5></fC03><fC03 i1="10" i2="3" l="ENG"><s0>Iron alloys</s0><s5>15</s5></fC03><fC03 i1="11" i2="3" l="FRE"><s0>Cobalt alliage</s0><s5>16</s5></fC03><fC03 i1="11" i2="3" l="ENG"><s0>Cobalt alloys</s0><s5>16</s5></fC03><fC03 i1="12" i2="3" l="FRE"><s0>Métal transition alliage</s0><s5>48</s5></fC03><fC03 i1="12" i2="3" l="ENG"><s0>Transition element alloys</s0><s5>48</s5></fC03><fN21><s1>249</s1></fN21></pA></standard></inist><affiliations><list><country><li>France</li><li>Tunisie</li></country><region><li>Haute-Normandie</li><li>Région Normandie</li></region><settlement><li>Saint-Etienne du Rouvray</li></settlement></list><tree><country name="France"><region name="Région Normandie"><name sortKey="Richomme, F" sort="Richomme, F" uniqKey="Richomme F" first="F." last="Richomme">F. Richomme</name></region><name sortKey="Le Breton, J M" sort="Le Breton, J M" uniqKey="Le Breton J" first="J. M." last="Le Breton">J. M. Le Breton</name></country><country name="Tunisie"><noRegion><name sortKey="Ben Kraiem, M S" sort="Ben Kraiem, M S" uniqKey="Ben Kraiem M" first="M. S." last="Ben Kraiem">M. S. Ben Kraiem</name></noRegion><name sortKey="Cheikhrouhou, A" sort="Cheikhrouhou, A" uniqKey="Cheikhrouhou A" first="A." last="Cheikhrouhou">A. Cheikhrouhou</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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