Phase segregation and orbital ordering in Bi1-xCaxMnO3 (x ≤ 0.75):: a neutron and synchrotron X-ray diffraction study

被引：2
|
作者：
García-Muñoz, JL
Aranda, MAG
Llobet, A
Frontera, C
Martínez-Lope, MJ
Ritter, C
Respaud, M
Broto, JM
机构：
[1] CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
[2] Univ Malaga, Dept Quim Inorgan Cristalog & Mineral, E-29071 Malaga, Spain
[3] CNRS, Lab Louis Neel, F-38042 Grenoble, France
[4] CSIC, Inst Ciencia Mat Madrid, Madrid, Spain
[5] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
[6] SNCMP, F-31077 Toulouse, France
[7] INSA, LPMC, F-31077 Toulouse, France
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2001年 / 323卷
关键词：
crystal structure and symmetry; magnetically ordered materials; electron-phonon interactions;
D O I：
10.1016/S0925-8388(01)01098-2
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
High-resolution synchrotron X-ray and neutron powder diffraction of Bi1-xCaxMnO3 (x greater than or equal to 0.75) has shown that these systems present a phase segregation coinciding with the electronic localization of the e(g) electrons. The very precise results obtained provide evidence of a mechanism for phase segregation based on subtle compositional heterogeneity effects. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：408 / 411
页数：4
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