Published November 30, 2008 | Version v1
Journal article Metadata-only

IR-active optical phonons in Pnma-1, Pnma-2 and R3-barc phases of LaMnO3+δ

Creators

  • 1. Institute of Solid State Physics, Russian Academy of Sciences, 142432, Chernogolovka, Moscow Distr. (Russian Federation)

Description

Infrared-active phonons in LaMnO3+δ were studied by means of the reflection and transmission spectroscopy from 50 to 800cm-1 at room temperature. Powder and ceramic samples of the phases of Pnma-2(δ=0.02),Pnma-1(δ=0.08) and R3-barc(δ=0.15) were investigated. In addition, energies of the dipole-active phonons in Pnma-2, Pnma-1 phases were obtained by lattice-dynamics calculations. The transformations of IR-active phonons with the increase in δ in the sequence of Pnma-2, Pnma-1, R3-barc are discussed

Availability note (English)

Available from http://dx.doi.org/10.1016/j.physb.2008.07.008

Additional details

Identifiers

DOI
10.1016/j.physb.2008.07.008;
arXiv
arXiv:0704.1402v2;
PII
S0921-4526(08)00309-8;

Publishing Information

Journal Title
Physica. B, Condensed Matter
Journal Volume
403
Journal Issue
21-22
Journal Page Range
p. 3896-3902
ISSN
0921-4526
CODEN
PHYBE3

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40058771
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CERAMICS; DIPOLES; INFRARED SPECTRA; LANTHANUM COMPOUNDS; MANGANESE COMPOUNDS; ORTHORHOMBIC LATTICES; OXYGEN COMPOUNDS; PHONONS; POWDERS; REFLECTION; SPECTROSCOPY; TEMPERATURE RANGE 0273-0400 K; TRANSFORMATIONS
Descriptors DEC
CRYSTAL LATTICES; CRYSTAL STRUCTURE; MULTIPOLES; QUASI PARTICLES; RARE EARTH COMPOUNDS; SPECTRA; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.