Published January 1, 2007
| Version v1
Journal article
Ferroelectric displacements in multiferroic Y(Mn,Ga)O3
- 1. Solid State Chemistry Laboratory, Materials Science Center, University of Groningen, 9747 AG Groningen (Netherlands)
- 2. Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132 (Indonesia)
Description
We have studied the effects of substitution of Mn3+ by Ga3+ on the crystal structure of YMnO3. Y(Mn,Ga)O3 is a magnetoferroelectric in which the ferroelectric displacements from the YO7 polyhedra are associated with buckling and tilting of the MnO5 bipyramids. The differences in ionic radius and orbital occupation between Mn3+ and Ga3+ result in an increase of the c/a lattice parameter ratio. This dilation is not associated with the displacements of MnO5 bipyramids, but with the elongation of the YO6 antiprisms. The magnitude of the local YO6 dipoles decrease with Ga substitution
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter and Materials Physics
- Journal Volume
- 75
- Journal Issue
- 1
- Journal Page Range
- p. 014108-014108.4
- ISSN
- 1098-0121
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39006453
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- CRYSTAL STRUCTURE; DIPOLES; ELONGATION; FERROELECTRIC MATERIALS; GALLIUM IONS; LATTICE PARAMETERS; MANGANESE IONS; OZONE; YTTRIUM COMPOUNDS
- Descriptors DEC
- CHARGED PARTICLES; DEFORMATION; DIELECTRIC MATERIALS; IONS; MATERIALS; MULTIPOLES; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- (c) 2007 The American Physical Society