Structural and disorder effects on the magnetic behavior of Ce(In1-xNix)2 alloys
Identifieur interne : 000487 ( Main/Repository ); précédent : 000486; suivant : 000488Structural and disorder effects on the magnetic behavior of Ce(In1-xNix)2 alloys
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Abstract
We have investigated the evolution of the magnetic and thermal properties on the Ce(In1-xNix)2 (x=0.025 and 0.05) series of alloys. The orthorhombic structure of the CeIn2 alloy changes to hexagonal A1B2-type for the Ni-diluted samples. The dc (ac) magnetic susceptibility and specific heat measurements show a change from first-order ferromagnetism in the CeIn2 alloy (x=0) to second order ferromagnetism upon chemical substitution of Ni, with an abrupt decrease of the transition temperature from 22 K to 6.3 K (x=0.025). The results indicate a preeminent role of the crystallographic type of structure and disorder effects on the magnetic behavior along the series.
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Ni<sub>x</sub>
)<sub>2</sub>
alloys</title>
<author><name sortKey="Rojas, D P" uniqKey="Rojas D">D. P. Rojas</name>
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<s3>ESP</s3>
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<author><name sortKey="Espeso, J I" uniqKey="Espeso J">J. I. Espeso</name>
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<s2>39005, Santander</s2>
<s3>ESP</s3>
<sZ>2 aut.</sZ>
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<country>Espagne</country>
<placeName><region nuts="2" type="communauté">Cantabrie</region>
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<orgName type="university">Université de Cantabrie</orgName>
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<author><name sortKey="Rodriguez Fernandez, J" uniqKey="Rodriguez Fernandez J">J. Rodriguez Fernandez</name>
<affiliation wicri:level="4"><inist:fA14 i1="02"><s1>CITIMAC & MAGMA, UA-CSIC, Facultad de Ciencias, Universidad de Cantabria, Av. de los Castros s/n</s1>
<s2>39005, Santander</s2>
<s3>ESP</s3>
<sZ>2 aut.</sZ>
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<term>Disordered crystals</term>
<term>Doping</term>
<term>Ferromagnetism</term>
<term>Impurity density</term>
<term>Indium alloys</term>
<term>Magnetic susceptibility</term>
<term>Magnetization</term>
<term>Nickel additions</term>
<term>Orthorhombic lattices</term>
<term>Property structure relationship</term>
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<term>Concentration impureté</term>
<term>Structure cristalline</term>
<term>Champ cristallin</term>
<term>Dopage</term>
<term>Addition nickel</term>
<term>Relation structure propriété</term>
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<front><div type="abstract" xml:lang="en">We have investigated the evolution of the magnetic and thermal properties on the Ce(In<sub>1-x</sub>
Ni<sub>x</sub>
)<sub>2</sub>
(x=0.025 and 0.05) series of alloys. The orthorhombic structure of the CeIn<sub>2</sub>
alloy changes to hexagonal A1B<sub>2</sub>
-type for the Ni-diluted samples. The dc (ac) magnetic susceptibility and specific heat measurements show a change from first-order ferromagnetism in the CeIn<sub>2</sub>
alloy (x=0) to second order ferromagnetism upon chemical substitution of Ni, with an abrupt decrease of the transition temperature from 22 K to 6.3 K (x=0.025). The results indicate a preeminent role of the crystallographic type of structure and disorder effects on the magnetic behavior along the series.</div>
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<s3>ESP</s3>
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Ni<sub>x</sub>
)<sub>2</sub>
(x=0.025 and 0.05) series of alloys. The orthorhombic structure of the CeIn<sub>2</sub>
alloy changes to hexagonal A1B<sub>2</sub>
-type for the Ni-diluted samples. The dc (ac) magnetic susceptibility and specific heat measurements show a change from first-order ferromagnetism in the CeIn<sub>2</sub>
alloy (x=0) to second order ferromagnetism upon chemical substitution of Ni, with an abrupt decrease of the transition temperature from 22 K to 6.3 K (x=0.025). The results indicate a preeminent role of the crystallographic type of structure and disorder effects on the magnetic behavior along the series.</s0>
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