Investigation of (R1-xR'x)2(Fe,Co)17 powders by Mössbauer spectrometry
Identifieur interne : 000085 ( PascalFrancis/Corpus ); précédent : 000084; suivant : 000086Investigation of (R1-xR'x)2(Fe,Co)17 powders by Mössbauer spectrometry
Auteurs : F. Richomme ; J. M. Le Breton ; M. S. Ben Kraiem ; A. CheikhrouhouSource :
- Journal of alloys and compounds [ 0925-8388 ] ; 2010.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
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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Format Inist (serveur)
NO : | PASCAL 10-0383238 INIST |
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ET : | Investigation of (R1-xR'x)2(Fe,Co)17 powders by Mössbauer spectrometry |
AU : | RICHOMME (F.); LE BRETON (J. M.); BEN KRAIEM (M. S.); CHEIKHROUHOU (A.) |
AF : | Groupe de Physique des Matériaux, UMR CNRS 6634/76801 Saint-Etienne du Rouvray/France (1 aut., 2 aut.); Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, B.P. 802/3018 Sfax/Tunisie (3 aut., 4 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Journal of alloys and compounds; ISSN 0925-8388; Royaume-Uni; Da. 2010; Vol. 494; No. 1-2; Pp. 5-10; Bibl. 25 ref. |
LA : | Anglais |
EA : | 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. |
CC : | 001B70F80 |
FD : | Effet Mössbauer; Déplacement isomère; Méthode Wigner Seitz; Champ magnétique hyperfin; Point Curie; Sous réseau; Décomposition raie; Aimantation; Lanthanide alliage; Fer alliage; Cobalt alliage; Métal transition alliage |
ED : | Moessbauer effect; Isomer shift; Wigner-Seitz method; Hyperfine magnetic field; Curie point; Sublattices; Line splitting; Magnetization; Rare earth alloys; Iron alloys; Cobalt alloys; Transition element alloys |
SD : | Campo magnético hiperfino |
LO : | INIST-1151.354000191703730080 |
ID : | 10-0383238 |
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Pascal:10-0383238Le document en format XML
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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>
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<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><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>
</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><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>
</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><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>
</affiliation>
</author>
<author><name sortKey="Cheikhrouhou, A" sort="Cheikhrouhou, A" uniqKey="Cheikhrouhou A" first="A." last="Cheikhrouhou">A. Cheikhrouhou</name>
<affiliation><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>
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<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>
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<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>
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<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>
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<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>
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Fe<sub>17</sub>
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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>
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<s5>03</s5>
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<s5>03</s5>
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<s5>04</s5>
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<s5>05</s5>
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<s5>07</s5>
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<s5>08</s5>
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<s5>12</s5>
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<s5>15</s5>
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<s5>48</s5>
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<server><NO>PASCAL 10-0383238 INIST</NO>
<ET>Investigation of (R<sub>1-x</sub>
R'<sub>x</sub>
)<sub>2</sub>
(Fe,Co)<sub>17</sub>
powders by Mössbauer spectrometry</ET>
<AU>RICHOMME (F.); LE BRETON (J. M.); BEN KRAIEM (M. S.); CHEIKHROUHOU (A.)</AU>
<AF>Groupe de Physique des Matériaux, UMR CNRS 6634/76801 Saint-Etienne du Rouvray/France (1 aut., 2 aut.); Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, B.P. 802/3018 Sfax/Tunisie (3 aut., 4 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Journal of alloys and compounds; ISSN 0925-8388; Royaume-Uni; Da. 2010; Vol. 494; No. 1-2; Pp. 5-10; Bibl. 25 ref.</SO>
<LA>Anglais</LA>
<EA>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.</EA>
<CC>001B70F80</CC>
<FD>Effet Mössbauer; Déplacement isomère; Méthode Wigner Seitz; Champ magnétique hyperfin; Point Curie; Sous réseau; Décomposition raie; Aimantation; Lanthanide alliage; Fer alliage; Cobalt alliage; Métal transition alliage</FD>
<ED>Moessbauer effect; Isomer shift; Wigner-Seitz method; Hyperfine magnetic field; Curie point; Sublattices; Line splitting; Magnetization; Rare earth alloys; Iron alloys; Cobalt alloys; Transition element alloys</ED>
<SD>Campo magnético hiperfino</SD>
<LO>INIST-1151.354000191703730080</LO>
<ID>10-0383238</ID>
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