CobaltMaghrebV1, PascalFrancis, Curation, bibRecord, 000210

Investigation of (R1-xR'x)2(Fe,Co)17 powders by Mössbauer spectrometry

Identifieur interne : 000210 ( PascalFrancis/Curation ); précédent : 000209; suivant : 000211

Investigation 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.

RBID : Pascal:10-0383238

Descripteurs français

Pascal (Inist)
- 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.

English descriptors

KwdEn :
- Cobalt alloys, Curie point, Hyperfine magnetic field, Iron alloys, Isomer shift, Line splitting, Magnetization, Moessbauer effect, Rare earth alloys, Sublattices, Transition element alloys, Wigner-Seitz method.

Abstract

We investigated (R_1-xR'_x)₂Fe₁₇ and (R_1-xR'_x)₂Fe₁₆Co powders by ⁵⁷Fe Mössbauer spectrometry at 295 K where R and R' are Y, Nd, Sm, Gd. The spectra of the (R_1-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 (R_1-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.

A01	`01`	`1`		`@0 0925-8388`
A03		`1`		`@0 J. alloys compd.`
A05				`@2 494`
A06				`@2 1-2`
A08	`01`	`1`	`ENG`	`@1 Investigation of (R_1-xR'_x)₂(Fe,Co)₁₇ powders by Mössbauer spectrometry`
A11	`01`	`1`		`@1 RICHOMME (F.)`
A11	`02`	`1`		`@1 LE BRETON (J. M.)`
A11	`03`	`1`		`@1 BEN KRAIEM (M. S.)`
A11	`04`	`1`		`@1 CHEIKHROUHOU (A.)`
A14	`01`			`@1 Groupe de Physique des Matériaux, UMR CNRS 6634 @2 76801 Saint-Etienne du Rouvray @3 FRA @Z 1 aut. @Z 2 aut.`
A14	`02`			`@1 Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, B.P. 802 @2 3018 Sfax @3 TUN @Z 3 aut. @Z 4 aut.`
A20				`@1 5-10`
A21				`@1 2010`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 1151 @5 354000191703730080`
A44				`@0 0000 @1 © 2010 INIST-CNRS. All rights reserved.`
A45				`@0 25 ref.`
A47	`01`	`1`		`@0 10-0383238`
A60				`@1 P`
A61				`@0 A`
A64	`01`	`1`		`@0 Journal of alloys and compounds`
A66	`01`			`@0 GBR`
C01	`01`		`ENG`	@0 We investigated (R_1-xR'_x)₂Fe₁₇ and (R_1-xR'_x)₂Fe₁₆Co powders by ⁵⁷Fe Mössbauer spectrometry at 295 K where R and R' are Y, Nd, Sm, Gd. The spectra of the (R_1-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 (R_1-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.
C02	`01`	`3`		`@0 001B70F80`
C03	`01`	`3`	`FRE`	`@0 Effet Mössbauer @5 02`
C03	`01`	`3`	`ENG`	`@0 Moessbauer effect @5 02`
C03	`02`	`3`	`FRE`	`@0 Déplacement isomère @5 03`
C03	`02`	`3`	`ENG`	`@0 Isomer shift @5 03`
C03	`03`	`3`	`FRE`	`@0 Méthode Wigner Seitz @5 04`
C03	`03`	`3`	`ENG`	`@0 Wigner-Seitz method @5 04`
C03	`04`	`X`	`FRE`	`@0 Champ magnétique hyperfin @5 05`
C03	`04`	`X`	`ENG`	`@0 Hyperfine magnetic field @5 05`
C03	`04`	`X`	`SPA`	`@0 Campo magnético hiperfino @5 05`
C03	`05`	`3`	`FRE`	`@0 Point Curie @5 06`
C03	`05`	`3`	`ENG`	`@0 Curie point @5 06`
C03	`06`	`3`	`FRE`	`@0 Sous réseau @5 07`
C03	`06`	`3`	`ENG`	`@0 Sublattices @5 07`
C03	`07`	`3`	`FRE`	`@0 Décomposition raie @5 08`
C03	`07`	`3`	`ENG`	`@0 Line splitting @5 08`
C03	`08`	`3`	`FRE`	`@0 Aimantation @5 09`
C03	`08`	`3`	`ENG`	`@0 Magnetization @5 09`
C03	`09`	`3`	`FRE`	`@0 Lanthanide alliage @5 12`
C03	`09`	`3`	`ENG`	`@0 Rare earth alloys @5 12`
C03	`10`	`3`	`FRE`	`@0 Fer alliage @5 15`
C03	`10`	`3`	`ENG`	`@0 Iron alloys @5 15`
C03	`11`	`3`	`FRE`	`@0 Cobalt alliage @5 16`
C03	`11`	`3`	`ENG`	`@0 Cobalt alloys @5 16`
C03	`12`	`3`	`FRE`	`@0 Métal transition alliage @5 48`
C03	`12`	`3`	`ENG`	`@0 Transition element alloys @5 48`
N21				`@1 249`

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R'<sub>x</sub>
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(Fe,Co)<sub>17</sub>
 powders by Mössbauer spectrometry</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Investigation of (R<sub>1-x</sub>
R'<sub>x</sub>
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(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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<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>
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<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>
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<country>Tunisie</country>
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<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>
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<sZ>3 aut.</sZ>
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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>
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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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<fA08 i1="01" i2="1" l="ENG"><s1>Investigation of (R<sub>1-x</sub>
R'<sub>x</sub>
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(Fe,Co)<sub>17</sub>
 powders by Mössbauer spectrometry</s1>
</fA08>
<fA11 i1="01" i2="1"><s1>RICHOMME (F.)</s1>
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<fA14 i1="01"><s1>Groupe de Physique des Matériaux, UMR CNRS 6634</s1>
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<s3>FRA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
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<fA14 i1="02"><s1>Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, B.P. 802</s1>
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<s3>TUN</s3>
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<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>
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<s5>02</s5>
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<fC03 i1="01" i2="3" l="ENG"><s0>Moessbauer effect</s0>
<s5>02</s5>
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<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>
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<s5>04</s5>
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<fC03 i1="03" i2="3" l="ENG"><s0>Wigner-Seitz method</s0>
<s5>04</s5>
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<fC03 i1="04" i2="X" l="FRE"><s0>Champ magnétique hyperfin</s0>
<s5>05</s5>
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<s5>05</s5>
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<s5>05</s5>
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<s5>06</s5>
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<s5>07</s5>
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<s5>07</s5>
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<s5>08</s5>
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<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>
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<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>
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<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>
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<fN21><s1>249</s1>
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   |area=    CobaltMaghrebV1
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   |étape=   Curation
   |type=    RBID
   |clé=     Pascal:10-0383238
   |texte=   Investigation of (R1-xR'x)2(Fe,Co)17 powders by Mössbauer spectrometry
}}

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	Serveur d'exploration sur le cobalt au Maghreb
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Serveur d'exploration sur le cobalt au Maghreb

Investigation of (R1-xR'x)2(Fe,Co)17 powders by Mössbauer spectrometry

Investigation of (R1-xR'x)2(Fe,Co)17 powders by Mössbauer spectrometry

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