Year: 1980
Type: article
Abstract: The temperature dependence of structural and magnetic order parameters of ferroelectric-antiferromagnetic BiFeO 3 with rhombohedral perovskite structure is investigated by means of neutron diffraction on a powder sample. The tilt angle of oxygen octahedra decreases from 12.5 degrees at 4.2K to 11.4 degrees at 878K. Associated with ferroelectricity the cation displacements diminish essentially with increasing temperature. Changes of cation shifts, tilt angle, distortion and strain of octahedra are discussed with respect to phase transitions.
Authors: P Fischer, M Polomska, I Sosnowska, M Szymanski
Institution: ETH Zurich
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2065166753