Physical properties of the ferromagnetic heavy-fermion compound UIr2Zn20

Physical properties of the ferromagnetic heavy-fermion compound UIr2Zn20
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铁磁重费米子化合物 UIr2Zn20 的物理性质

DOI:
10.1103/physrevb.74.155118
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发表时间:
2006
期刊:
影响因子:
3.7
通讯作者:
M. Hundley
M. Hundley
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
E. Bauer;A. Christianson;J. Gardner;V. Sidorov;J. Thompson;J. Sarrao;M. Hundley

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对立方化合物 UIr{sub 2}Zn{sub 20} 进行了环境压力和外加压力下的磁化强度、比热、中子衍射和电阻率的测量。在 T{sub C} = 2.1 K 时发生类一阶铁磁转变,饱和磁化强度为 {mu}{sub sat}-0.4{mu}{sub B},表明铁磁体处于流动状态。在这种有序状态下,电子比热系数仍然很大,{gamma}-450 mJ/mol K{sup 2},将UIr{sub 2}Zn{sub 20}分类为极少数重费米子铁磁体之一。
Measurements of magnetization, specific heat, neutron diffraction, and electrical resistivity at ambient and applied pressure have been carried out on the cubic compound UIr{sub 2}Zn{sub 20}. A first-order-like ferromagnetic transition occurs at T{sub C} = 2.1 K with a saturation magnetization {mu}{sub sat}-0.4{mu}{sub B}, indicating itinerant ferromagnetism. In this ordered state, the electronic specific heat coefficient remains large, {gamma}-450 mJ/mol K{sup 2}, classifying UIr{sub 2}Zn{sub 20} as one of the very few heavy-fermion ferromagnets.
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者:
T. Akazawa;et. al.
通讯作者: et. al.