Magnetization and specific heat of CePd1 − xNixAl
Magnetization and specific heat of CePd1 − xNixAl
复制标题
CePd1âââxNixAl 的磁化强度和比热
DOI:
10.1002/pssb.201200931
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
H. v. Löhneysen
中科院分区:
文献类型:
--
作者:
V. Fritsch;C.-L. Huang;N. Bagrets;K. Grube;S. Schumann;H. v. Löhneysen
CePdAl crystallizes in the hexagonal ZrNiAl‐type structure (space group P62m), where the magnetic Ce3+ ions form a network of equilateral triangles in the ab plane similar to the kagomé lattice. It is a well known antiferromagnetic heavy‐fermion system with Néel temperature TN= 2.7 K. Magnetization and specific‐heat measurements performed on CePd1− xNixAl polycrystals show that the antiferromagnetic order in the system is suppressed by Ni substitution. TN is reduced to zero temperature at a Ni concentration x= 0.144. At high temperatures the magnetization data follow a Curie–Weiss law. The Weiss temperature Θ is negative with \left|Θ\right| increasing with x possibly due to the increasing Kondo effect. Indeed, the Kondo temperature increases with x as documented by an analysis of the specific heat and magnetic entropy of CePd1− xNixAl for the samples with x= 0, 0.062, 0.097, and 0.144.
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DOI:
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发表时间:
2006
期刊:
Physica B 378-380
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1994
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