X-ray diffraction and magnetic susceptibility measurements for FexNi1-xTa2O6

被引：3
|
作者：
de Oliveira Neto, S. R.
Kinast, E. J.
Gusmao, M. A.
dos Santos, C. A.
Isnard, O.
da Cunha, J. B. M.
机构：
[1] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil
[2] Univ Estadual Rio Grande do Sul, BR-90010191 Porto Alegre, RS, Brazil
[3] Univ Grenoble 1, Inst Neel, CNRS, F-38042 Grenoble 9, France
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 35期
关键词：
D O I：
10.1088/0953-8984/19/35/356210
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The trirutile family of the tapiolite-like compound FexNi1-x Ta2O6 was investigated by means of x-ray powder diffraction (XRD) and magnetic susceptibility measurements. From Rietveld refinement it is demonstrated that the family is a homogeneous solid solution obeying Vegard's law. Magnetic susceptibility curves exhibit typical signatures of low-dimensional systems, with broadened maxima due to short range correlations immediately above the antiferromagnetic transition temperature T-N. The T versus x phase diagram presents a minimum that suggests bicritical behaviour.
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页数：5
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