Crystal and magnetic structure in co-substituted BiFeO3
- Resource Type
- Authors
- Izabela, Izabela; Sosnowska, Izabela; Azuma, Masaki; Przeniosło, Radosław; Wardecki, Dariusz; Chen, Wei-tin; Oka, Kengo; Shimakawa, Yuichi
- Source
- Inorganic chemistry. 52(22)
- Subject
- 010302 applied physics
Magnetic moment
Condensed matter physics
Magnetic structure
Chemistry
Neutron diffraction
02 engineering and technology
Crystal structure
Spin structure
021001 nanoscience & nanotechnology
01 natural sciences
3. Good health
Inorganic Chemistry
Crystallography
0103 physical sciences
Antiferromagnetism
Wyckoff positions
Physical and Theoretical Chemistry
0210 nano-technology
Monoclinic crystal system
- Language
- ISSN
- 1520-510X
Ultra-high-resolution neutron diffraction studies of BiFe(0.8)Co(0.2)O3 show a transition from a cycloidal space modulated spin structure at T = 10 K to a collinear G-type antiferromagnetic structure at T = 120 K. The model of antiparallel directions of Fe(3+) and Co(3+) magnetic moments at the shared Wyckoff position describes well the observed neutron diffraction intensities. On heating above RT, the crystal structure of BiFe(0.8)Co(0.2)O3 changes from a rhombohedral R3c to a monoclinic Cm. At 573 K only the Cm phase is present. The collinear C-type antiferromagnetic structure is present in the Cm phase of BiFe(0.8)Co(0.2)O3 at RT after annealing.