Noncentrosymmetric Structure of LuFeO3 in Metastable State

The crystal structure of metastable LuFeO 3 synthesized by containerless processing has been revealed to be a non-centrosymmetric structure (space group $P6_{3}cm$) by analyzing the high-energy synchrotron-radiation powder-diffraction data using the maximum entropy method (MEM)/Rietveld method. The...

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Published inJpn J Appl Phys Vol. 49; no. 9; pp. 09ME06 - 09ME06-4
Main Authors Magome, Eisuke, Moriyoshi, Chikako, Kuroiwa, Yoshihiro, Masuno, Atsunobu, Inoue, Hiroyuki
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 01.09.2010
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Summary:The crystal structure of metastable LuFeO 3 synthesized by containerless processing has been revealed to be a non-centrosymmetric structure (space group $P6_{3}cm$) by analyzing the high-energy synchrotron-radiation powder-diffraction data using the maximum entropy method (MEM)/Rietveld method. The structural characteristics are found in the FeO 5 trigonal bipyramid distorted and tilted from the $c$-axis, which is cause by the hybridization of atomic orbitals between the O atom constituent of the polyhedron and the neighboring Lu atom. The spontaneous polarization expected from the polar structure is estimated at about 5 \mbox{$\mu$}C/cm 2 .
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.49.09ME06