Study on the low-temperature properties of pyrochlores Gd2Hf2O7 and Gd2Zr2O7, using crystal-field theory

被引：4
|
作者：
Biswas, Aksar Ali [1 ]
Jana, Yatramohan [1 ]
机构：
[1] Univ Kalyani, Dept Phys, Kalyani 741235, W Bengal, India
来源：
SOLID STATE PHYSICS: PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM 2010, PTS A AND B | 2011年 / 1349卷
关键词：
Rare earth metals; Crystal field theory; Antiferromagnetics;
D O I：
10.1063/1.3606256
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The geometrically frustrated pyrochlores Gd2Hf2O7 (GdH) and Gd2Zr2O7 (GdZ) are easy planar anisotropic systems in which considerable single-ion crystal-field anisotropies of D-3d symmetry are found in the ground multiplet S-8(7/2) due to admixture of higher Russell-Saunders terms. The S-8(7/2) splits into 4 doublets with total CF splitting 9.9 K in GdH and 9.4 K in GdZ. The magnetic specific heat C-mag follows a conventional T-3 behavior in GdH and an unconventional T-4.6 behavior in GdZ down to 0.4 K.
引用
收藏
页码：1121 / 1122
页数：2
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