Published June 1996
| Version v1
Journal article
Evidence for a local lattice distortion in Ca-doped LaMnO3
Creators
- 1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- 2. Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional--Merida, Merida, Yuc, 97310 (Mexico)
Description
We have found that a significant change in the local structure of La2/3Ca1/3MnO3 occurs between 80 K and temperatures above the Curie temperature, Tc=270 K. Near-edge x-ray-absorption spectra exhibits changes between 80 K and above Tc. X-ray-absorption fine structure reveals differences between the nearest-neighbor Mn-O bond distributions at 80 K and above Tc. The single-site distribution at low temperature becomes a complex, multi-site distribution above Tc. The observed change is consistent with proposed small polaron related local Jahn-Teller distortions for T approx-gt Tc. copyright 1996 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter
- Journal Volume
- 53
- Journal Issue
- 21
- Journal Page Range
- p. 13985-13988.
- ISSN
- 0163-1829
- CODEN
- PRBMDO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 27074269
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BOND LENGTHS; CALCIUM ADDITIONS; CALCIUM OXIDES; CRYSTAL STRUCTURE; DOPED MATERIALS; K ABSORPTION; LANTHANUM OXIDES; LATTICE PARAMETERS; MANGANESE OXIDES; PEROVSKITES; POLARONS; X-RAY SPECTROSCOPY
- Descriptors DEC
- ABSORPTION; ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; LANTHANUM COMPOUNDS; MANGANESE COMPOUNDS; MATERIALS; MINERALS; OXIDES; OXYGEN COMPOUNDS; QUASI PARTICLES; RARE EARTH COMPOUNDS; SORPTION; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS