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

页码：408 / 411

页数：4

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