期刊
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
卷 69, 期 9, 页码 2146-2150出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2008.03.029
关键词
Oxides; Neutron scattering; Crystal structure
The local and average structure of the Ca endmember of the La1-xCaxMnO3 series has been investigated. Neutron powder diffraction-based high real-space resolution atomic pair distribution function (PDF) analysis, yielding the local atomic structure, and the corresponding Rietveld analysis yielding the average crystal structure show that the two structural scales are in accord in this material, and that the MnO6 octahedral units are regular for all temperatures studied. Quantitative values of structural parameters are reported for a wide temperature range, important for both experimental and theoretical considerations of hole and electron doped branches of the rich phase diagram of La1-xCaxMnO3. (C) 2008 Elsevier Ltd. All rights reserved.
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