IndiumV3, Russie, Analysis, bibRecord, 000311

Magnetoelastic effects and magnetic anisotropy in the intermediate-valence compound YbInCu4

Identifieur interne : 000311 ( Russie/Analysis ); précédent : 000310; suivant : 000312

Magnetoelastic effects and magnetic anisotropy in the intermediate-valence compound YbInCu4

Auteurs : RBID : Pascal:06-0196773

Descripteurs français

Pascal (Inist)
- Effet magnétoélastique, Anisotropie magnétique, Valence intermédiaire, Etat mixte, Valence mixte, Effet température, Champ intense, Haute pression, Aimantation, Dilatation thermique, Magnétostriction, Effet Kondo, Impureté, Indium alliage, Cuivre alliage, Ytterbium alliage, Monocristal, Matériau paramagnétique, YbInCu4, 75, 65, 7580.

English descriptors

KwdEn :
- Copper alloys, High field, High pressure, Impurities, Indium alloys, Intermediate valence, Kondo effect, Magnetic anisotropy, Magnetization, Magnetoelastic effects, Magnetostriction, Mixed state, Mixed valence, Monocrystals, Paramagnetic materials, Temperature effects, Thermal expansion, Ytterbium alloys.

Abstract

YbInCu₄ compound exhibits a first-order valence transition of Yb from a trivalent state to a mixed-valence state with decreasing temperature. Here we provide an overview of our recent high-field and high-pressure measurements of magnetization, thermal expansion and magnetostriction of the valence-fluctuating compound. The results are analyzed using the Kondo single-impurity model. It is shown that the change of the 4/-conduction band electron hybridization is responsible for a large modification of the physical properties of YbInCu₄ at the valence transition. The volume magnetostriction is rather large for the low-temperature mixed-valence state, but strongly suppressed in the high-temperature local-moment state. From the magnetization measurements of the oriented YbInCu₄ single crystal, an appreciable anisotropy was found in the susceptibility, high-field magnetization, effective moment, paramagnetic Curie temperature and critical field of the valence transition. The type of the magnetic anisotropy and the value of anisotropic magnetoelastic coupling constant do not change significantly on going from the mixed-valence to the local-moment state. The anisotropic magnetostriction and magnetic anisotropy are described well in terms of a single-ion model of the interaction of anisotropic 4f-shell of Yb ion with the crystal electric field.

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Pascal:06-0196773

Le document en format XML

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</title>
<author><name sortKey="Mushnikov, N V" uniqKey="Mushnikov N">N. V. Mushnikov</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Metal Physics, Korulevskaya 18</s1>
<s2>620219 Ekaterinburg</s2>
<s3>RUS</s3>
<sZ>1 aut.</sZ>
</inist:fA14>
<country>Russie</country>
<wicri:noRegion>620219 Ekaterinburg</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Goto, Tsuneaki" uniqKey="Goto T">Tsuneaki Goto</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha</s1>
<s2>Kashiwa, Chiba 277-8581</s2>
<s3>JPN</s3>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<wicri:noRegion>Kashiwa, Chiba 277-8581</wicri:noRegion>
</affiliation>
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<publicationStmt><idno type="inist">06-0196773</idno>
<date when="2006">2006</date>
<idno type="stanalyst">PASCAL 06-0196773 INIST</idno>
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<seriesStmt><idno type="ISSN">0304-8853</idno>
<title level="j" type="abbreviated">J. magn. magn. mater.</title>
<title level="j" type="main">Journal of magnetism and magnetic materials</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Copper alloys</term>
<term>High field</term>
<term>High pressure</term>
<term>Impurities</term>
<term>Indium alloys</term>
<term>Intermediate valence</term>
<term>Kondo effect</term>
<term>Magnetic anisotropy</term>
<term>Magnetization</term>
<term>Magnetoelastic effects</term>
<term>Magnetostriction</term>
<term>Mixed state</term>
<term>Mixed valence</term>
<term>Monocrystals</term>
<term>Paramagnetic materials</term>
<term>Temperature effects</term>
<term>Thermal expansion</term>
<term>Ytterbium alloys</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Effet magnétoélastique</term>
<term>Anisotropie magnétique</term>
<term>Valence intermédiaire</term>
<term>Etat mixte</term>
<term>Valence mixte</term>
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<term>Haute pression</term>
<term>Aimantation</term>
<term>Dilatation thermique</term>
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<term>Effet Kondo</term>
<term>Impureté</term>
<term>Indium alliage</term>
<term>Cuivre alliage</term>
<term>Ytterbium alliage</term>
<term>Monocristal</term>
<term>Matériau paramagnétique</term>
<term>YbInCu4</term>
<term>75</term>
<term>65</term>
<term>7580</term>
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<front><div type="abstract" xml:lang="en">YbInCu<sub>4</sub>
 compound exhibits a first-order valence transition of Yb from a trivalent state to a mixed-valence state with decreasing temperature. Here we provide an overview of our recent high-field and high-pressure measurements of magnetization, thermal expansion and magnetostriction of the valence-fluctuating compound. The results are analyzed using the Kondo single-impurity model. It is shown that the change of the 4/-conduction band electron hybridization is responsible for a large modification of the physical properties of YbInCu<sub>4</sub>
 at the valence transition. The volume magnetostriction is rather large for the low-temperature mixed-valence state, but strongly suppressed in the high-temperature local-moment state. From the magnetization measurements of the oriented YbInCu<sub>4</sub>
 single crystal, an appreciable anisotropy was found in the susceptibility, high-field magnetization, effective moment, paramagnetic Curie temperature and critical field of the valence transition. The type of the magnetic anisotropy and the value of anisotropic magnetoelastic coupling constant do not change significantly on going from the mixed-valence to the local-moment state. The anisotropic magnetostriction and magnetic anisotropy are described well in terms of a single-ion model of the interaction of anisotropic 4f-shell of Yb ion with the crystal electric field.</div>
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 compound exhibits a first-order valence transition of Yb from a trivalent state to a mixed-valence state with decreasing temperature. Here we provide an overview of our recent high-field and high-pressure measurements of magnetization, thermal expansion and magnetostriction of the valence-fluctuating compound. The results are analyzed using the Kondo single-impurity model. It is shown that the change of the 4/-conduction band electron hybridization is responsible for a large modification of the physical properties of YbInCu<sub>4</sub>
 at the valence transition. The volume magnetostriction is rather large for the low-temperature mixed-valence state, but strongly suppressed in the high-temperature local-moment state. From the magnetization measurements of the oriented YbInCu<sub>4</sub>
 single crystal, an appreciable anisotropy was found in the susceptibility, high-field magnetization, effective moment, paramagnetic Curie temperature and critical field of the valence transition. The type of the magnetic anisotropy and the value of anisotropic magnetoelastic coupling constant do not change significantly on going from the mixed-valence to the local-moment state. The anisotropic magnetostriction and magnetic anisotropy are described well in terms of a single-ion model of the interaction of anisotropic 4f-shell of Yb ion with the crystal electric field.</s0>
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Magnetoelastic effects and magnetic anisotropy in the intermediate-valence compound YbInCu4

Magnetoelastic effects and magnetic anisotropy in the intermediate-valence compound YbInCu4

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

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