Open AccessStructure and physical properties of La0.1Bi0.9-xEuxFeO3 compounds
Author(s) -
Liu Yan-hui,
Jingbo Li,
LIANG JING-KUI,
Jun Luo,
Lina Ji,
Jiye Zhang,
Rao Guang-Hui
Publication year - 2008
Publication title -
acta physica sinica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.6476
Subject(s) - orthorhombic crystal system , materials science , ferromagnetism , phase (matter) , dielectric , condensed matter physics , atmospheric temperature range , magnetic moment , diffraction , powder diffraction , thermodynamics , crystallography , crystal structure , chemistry , physics , optics , organic chemistry , optoelectronics
In this work, La0.1Bi0.9-xEuxFeO3 compounds were prepared by solid-state reaction. The phase relation at room temperature was investigated by X-ray powder diffraction. A rhombohedral (R3c) phase exists for x≤0.05; for 0.08≤x≤0.12 a pseudo-R3c phase is found; for x≥0.15 it is an orthorhombic (Pbnm) phase, while the distortion of the Pbnm phase was observed for the composition range of 0.15≤x≤0.20. Magnetic measurements indicate that weak ferromagnetism exists in all the compounds, and for the compounds with x≤0.20 the magnetic moment has the maximum value at x=0.12. The composition dependence of dielectric constant was investigated at room temperature. The relationship between the structure and the physical properties was discussed.
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