Magnetic phase diagram of the Bi1-xCaxMnO3 manganites

被引：0
|
作者：
I. O. Troyanchuk
O. S. Mantytskaya
A. N. Chobot
机构：
[1] National Academy of Sciences of Belarus,Institute of Solid
来源：
Physics of the Solid State | 2002年 / 44卷
关键词：
Spectroscopy; State Physics; Phase Diagram; Phase Transformation; Elastic Property;
D O I：
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学科分类号：
摘要：
The magnetic and elastic properties of the Bi1-xCaxMnO3 manganites are studied. The phase transformations revealed are ferromagnet-spin glass (x≥0.15) and spin glass-charge-ordered antiferromagnet (x≥0.25). The ferromagnetic state is characterized by ordering of the Mn3+dx2-y orbitals. It is suggested that thespin glass state originates from local static Jahn-Teller distortions. The antiferromagnetic charge-ordered and the spin-glass disordered phases coexist in samples with 0.25<x<0.32, which may be due to the charge order-disorder phase transformation being martensitic in character. The magnetic phase diagram is constructed.
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页码：2266 / 2270
页数：4
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