Moment dilution in the heavy fermion compound Ce2Bi

被引：0
|
作者：
Rieger, J.J. [1 ]
Soberino, J.C.Arcas [1 ]
Mielke, A. [1 ]
Scheidt, E.-W. [1 ]
Stewart, G.R. [1 ]
机构：
[1] Universitaet Augsburg, Augsburg, Germany
来源：
Physica B: Condensed Matter | 1995年 / 206-207卷 / 1-4期
关键词：
Antiferromagnetism - Doping (additives) - Lanthanum - Lattice constants - Magnetic moments - Magnetic permeability - Magnetization - Metamagnetism - Phase transitions - Specific heat - Substitution reactions;
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摘要：
The heavy fermion compound Ce2Bi has two inequivalent Ce-sites. La was doped on these sites to study the influence of the antiferromagnetic order on the high electronic contribution of the specific heat (γHT(T > TN) 340 mJ/Ce-mol K2). The slightly larger La atom replaces the Ce2 site first and then subsequently the Ce1 site in the La2Sb structure. Lattice parameters, magnetic susceptibility and specific heat are used to elucidate the magnetic nature of the two different cerium sites. We find a somewhat enhanced γHT, a decrease in TN and furthermore a metamagnetic transition at 2.2 T (2 K), which is closely related to the long-range antiferromagnetic order.
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页码：252 / 254
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