Study of magnetic properties of A2B′NbO6 (A = Ba,Sr,BaSr; and B′ = Fe and Mn) double perovskites

被引：61

作者：

Rama, N

Philipp, JB

Opel, M

Chandrasekaran, K

Sankaranarayanan, V

Gross, R

Rao, MSR

机构：

[1] Indian Inst Technol, Math Sci Res Ctr, Madras 600036, Tamil Nadu, India

[2] Indian Inst Technol, Dept Phys, Madras 600036, Tamil Nadu, India

[3] Walther Meissner Inst Tieftemp Forsch, D-85748 Garching, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2004年 / 95卷 / 11期

关键词：

D O I：

10.1063/1.1682952

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the magnetic properties of Ba2FeNbO6 and Ba2MnNbO6. It is seen that Ba2FeNbO6 is an antiferromagnet with a weak ferromagnetic behavior at 5 K while Ba2MnNbO6 shows two magnetic transitions, one at 45 K and the other at 12 K. Electron spin resonance measurements at room temperature show that the Mn compound does not show any Jahn-Teller distortion. It is also seen that the Neel temperatures of the A(2)FeNbO(6) (A=Ba,Sr,BaSr) compounds do not vary significantly. However variations in the average A-site ionic radius influence the formation of short range correlations that persist above T-N. (C) 2004 American Institute of Physics.

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页码：7528 / 7530

页数：3

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