Magnetic properties of the two allotropic phases of Pu Ga 3
Magnetic properties of the two allotropic phases of Pu Ga 3
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Pu Ga 3 两个同素异形相的磁性
DOI：
10.1103/physrevb.72.064438
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发表时间：
2005
影响因子：
3.7
通讯作者：
E. Bauer
中科院分区：
文献类型：
--
作者：
P. Boulet;E. Colineau;F. Wastin;P. Javorský;J. Griveau;J. Rebizant;G. Stewart;E. Bauer
晶体为三角结构或六方结构的DO 19型。这两个同素异形体的磁性能进行了研究，磁化强度，比热，电阻率测量到低温和磁场和高压下。两相磁有序;三角变体对应于饱和磁矩低于的软铁磁体，而六方变体呈现反铁磁有序，在（at）处经历变磁转变。在顺磁状态下，由修正的居里-外斯定律推导出的有效磁矩对两相均为，表明存在电荷态。三角和六角同素异形体的电子比热系数和的值，分别表明一个中等重费米子字符。与相关化合物、、和的比较表明有强烈的离域倾向。
crystallizes in either a trigonal structure typeor in the hexagonal DO19 type. The magnetic properties of both allotropes were investigated by magnetization, specific heat, and electrical resistivity measurements down to low temperatures and under magnetic fields and high pressures. Both phases order magnetically; the trigonal modification corresponds to a soft ferromagnet belowwith a saturated moment of, whereas the hexagonal one exhibits antiferromagnetic order belowwhich undergoes a metamagnetic transition at(at). In the paramagnetic state, the effective magnetic moment inferred from a modified Curie-Weiss law amounts tofor both phases, indicative of the occurrence of acharge state. The values of the electronic specific heat coefficientandfor the trigonal and hexagonal allotropes, respectively, indicate a moderate heavy fermion character. Comparisons with related compounds,, andsuggest a strong tendency towarddelocalization.
压力下UGa_3反铁磁序的中子衍射研究
DOI：
--
发表时间：
2002
期刊：
J.Phys.Chem.Sol. 68
影响因子：
--
作者：
N.Onose;A.Fujiwara;M.Nakamura et al.
通讯作者：
M.Nakamura et al.