Published May 2001
| Version v1
Journal article
Phase separation in La0.5Ca0.5MnO3 controlled trough thermal treatments
Description
A study of phase separation effects in polycrystalline La0.5Ca0.5MnO3 in samples with average grain size ranging from 200 to 1300 nm is reported. Magnetic and electrical measurements show that the fraction of the ferromagnetic metallic phase gradually decreases as the grain size increase. The defective structure at the grain surface could explain the local inhibition of the COAFM phase, an effect that is gradually removed by grain size increase. Besides, this effect is also found to be highly dependent on the oxygen content and its spatial distribution
Additional details
Identifiers
- PII
- S0304885300008568;
Publishing Information
- Journal Title
- Journal of Magnetism and Magnetic Materials
- Journal Volume
- 226-230
- Journal Issue
- 1-3
- Journal Page Range
- p. 1901-1903
- ISSN
- 0304-8853
- CODEN
- JMMMDC
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 33036583
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANTIFERROMAGNETISM; CALCIUM COMPOUNDS; CHARGE DISTRIBUTION; CRYSTAL DEFECTS; CRYSTAL-PHASE TRANSFORMATIONS; ELECTRICAL PROPERTIES; FERROMAGNETISM; GRAIN SIZE; INTERMETALLIC COMPOUNDS; LANTHANUM COMPOUNDS; MAGNETIC PROPERTIES; MANGANESE OXIDES; ORDER-DISORDER TRANSFORMATIONS; OXYGEN; PHASE STUDIES; POLYCRYSTALS; SPATIAL DISTRIBUTION; SURFACE PROPERTIES; TERNARY ALLOY SYSTEMS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ALLOY SYSTEMS; ALLOYS; CHALCOGENIDES; CRYSTAL STRUCTURE; CRYSTALS; DISTRIBUTION; ELEMENTS; MAGNETISM; MANGANESE COMPOUNDS; MICROSTRUCTURE; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SIZE; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2001 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.