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

Authors
Garcia-Munoz, JL Aranda, MAG Llobet, A Frontera, C Martinez-Lope, MJ Ritter, C Respaud, M Broto, JM
Citation
Jl. Garcia-munoz et al., Phase segregation and orbital ordering in Bi1-xCaxMnO3 (x <= 0.75): a neutron and synchrotron X-ray diffraction study, J ALLOY COM, 323, 2001, pp. 408-411
Citations number
10
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF ALLOYS AND COMPOUNDS
ISSN journal
09258388 → ACNP
Volume
323
Year of publication
2001
Pages
408 - 411
Database
ISI
SICI code
0925-8388(20010712)323:<408:PSAOOI>2.0.ZU;2-X
Abstract
High-resolution synchrotron X-ray and neutron powder diffraction of Bi1-xCa xMnO3 (x greater than or equal to 0.75) has shown that these systems presen t a phase segregation coinciding with the electronic localization of the e( g) electrons. The very precise results obtained provide evidence of a mecha nism for phase segregation based on subtle compositional heterogeneity effe cts. (C) 2001 Elsevier Science B.V. All rights reserved.