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Magnetic, electrical and thermodynamic properties of RE8Pd24In

Identifieur interne : 003D43 ( Main/Repository ); précédent : 003D42; suivant : 003D44

Magnetic, electrical and thermodynamic properties of RE8Pd24In

Auteurs : RBID : Pascal:11-0006829

Descripteurs français

Pascal (Inist)
- Loi Curie Weiss, Propriété thermodynamique, Phénomène transport, Diffraction RX, Conductivité électrique, Susceptibilité magnétique, Aimantation, Chaleur massique, Antiferromagnétisme, Lanthanide alliage, Transition magnétique, Paramètre cristallin, Palladium alliage, Indium alliage, Alliage ternaire, Réseau cubique.

English descriptors

KwdEn :
- Antiferromagnetism, Cubic lattices, Curie-Weiss law, Electrical conductivity, Indium alloys, Lattice parameters, Magnetic susceptibility, Magnetic transitions, Magnetization, Palladium alloys, Rare earth alloys, Specific heat, Ternary alloys, Thermodynamic properties, Transport processes, XRD.

Abstract

Investigations of magnetic, transport and thermodynamic properties of RE₈Pd₂₄In (RE = Pr, Nd, Gd, Tb, Dy, Ho, Er and Tm) are reported through measurements of X-ray diffraction, electrical resistivity (ρ(T)), magnetic susceptibility (χ(T)), magnetization (σ(μ₀H)) and heat capacity (C_p(T)). These ternary compounds have the cubic AuCu₃-type structure. Compounds with RE = Gd and Tb order antiferromagnetically (AF) and exhibit magnetic transitions observed in their χ (T) and C_p(T). ρ(T) results for the Gd and Tb compounds indicate a minimum above the magnetic phase transition temperature T_N, and an increase in ρ(T) upon further cooling as a precursor ofAF order at lower temperatures. χ (T) data at high temperatures follow the Curie-Weiss relation for all compounds and give effective moment values close to those expected for the free RE³⁺-ion. Enhanced values of the electronic contribution to the heat capacity were observed for Gd₈Pd₂₄In and Tb₈Pd₂₄In.

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Pascal:11-0006829

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Pd<sub>24</sub>
In</title>
<author><name sortKey="Tchoula Tchokonte, M B" uniqKey="Tchoula Tchokonte M">M. B. Tchoula Tchokonte</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Physics, University of the Western Cape, Private BagX 17</s1>
<s2>Bellville 7535</s2>
<s3>ZAF</s3>
<sZ>1 aut.</sZ>
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<country>Afrique du Sud</country>
<wicri:noRegion>Bellville 7535</wicri:noRegion>
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</author>
<author><name sortKey="Du Plessis, P De V" uniqKey="Du Plessis P">P. De V. Du Plessis</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Physics, University of Johannesburg, PO Box 524</s1>
<s2>Auckland Park 2006</s2>
<s3>ZAF</s3>
<sZ>2 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Afrique du Sud</country>
<wicri:noRegion>Auckland Park 2006</wicri:noRegion>
</affiliation>
<affiliation wicri:level="4"><inist:fA14 i1="03"><s1>School of Physics, University of the Witwatersrand, Private Bag 3, PO Wits 2050</s1>
<s2>Johannesburg</s2>
<s3>ZAF</s3>
<sZ>2 aut.</sZ>
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<country>Afrique du Sud</country>
<wicri:noRegion>Johannesburg</wicri:noRegion>
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<placeName><settlement type="city">Johannesburg</settlement>
<region type="region" nuts="2">Gauteng</region>
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<author><name sortKey="Kaczorowski, D" uniqKey="Kaczorowski D">D. Kaczorowski</name>
<affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PO Box 1410</s1>
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<author><name sortKey="Strydom, A M" uniqKey="Strydom A">A. M. Strydom</name>
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<term>Curie-Weiss law</term>
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<term>Indium alloys</term>
<term>Lattice parameters</term>
<term>Magnetic susceptibility</term>
<term>Magnetic transitions</term>
<term>Magnetization</term>
<term>Palladium alloys</term>
<term>Rare earth alloys</term>
<term>Specific heat</term>
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<term>Transport processes</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Loi Curie Weiss</term>
<term>Propriété thermodynamique</term>
<term>Phénomène transport</term>
<term>Diffraction RX</term>
<term>Conductivité électrique</term>
<term>Susceptibilité magnétique</term>
<term>Aimantation</term>
<term>Chaleur massique</term>
<term>Antiferromagnétisme</term>
<term>Lanthanide alliage</term>
<term>Transition magnétique</term>
<term>Paramètre cristallin</term>
<term>Palladium alliage</term>
<term>Indium alliage</term>
<term>Alliage ternaire</term>
<term>Réseau cubique</term>
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<front><div type="abstract" xml:lang="en">Investigations of magnetic, transport and thermodynamic properties of RE<sub>8</sub>
Pd<sub>24</sub>
In (RE = Pr, Nd, Gd, Tb, Dy, Ho, Er and Tm) are reported through measurements of X-ray diffraction, electrical resistivity (ρ(T)), magnetic susceptibility (χ(T)), magnetization (σ(μ<sub>0</sub>
H)) and heat capacity (C<sub>p</sub>
(T)). These ternary compounds have the cubic AuCu<sub>3</sub>
-type structure. Compounds with RE = Gd and Tb order antiferromagnetically (AF) and exhibit magnetic transitions observed in their χ (T) and C<sub>p</sub>
(T). ρ(T) results for the Gd and Tb compounds indicate a minimum above the magnetic phase transition temperature T<sub>N</sub>
, and an increase in ρ(T) upon further cooling as a precursor ofAF order at lower temperatures. χ (T) data at high temperatures follow the Curie-Weiss relation for all compounds and give effective moment values close to those expected for the free RE<sup>3+</sup>
-ion. Enhanced values of the electronic contribution to the heat capacity were observed for Gd<sub>8</sub>
Pd<sub>24</sub>
In and Tb<sub>8</sub>
Pd<sub>24</sub>
In.</div>
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H)) and heat capacity (C<sub>p</sub>
(T)). These ternary compounds have the cubic AuCu<sub>3</sub>
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(T). ρ(T) results for the Gd and Tb compounds indicate a minimum above the magnetic phase transition temperature T<sub>N</sub>
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<s5>18</s5>
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<fN21><s1>003</s1>
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Magnetic, electrical and thermodynamic properties of RE8Pd24In

Magnetic, electrical and thermodynamic properties of RE8Pd24In

Descripteurs français

English descriptors

Abstract

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

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri