| Autor: |
Lee, Seong Su, Semkin, Mikhail A., Pirogov, Alexander N. |
| Zdroj: |
Materials Science Forum; March 2016, Vol. 845 Issue: 1 p38-41, 4p |
| Abstrakt: |
Neutron diffraction has been carried out to study temperature evolution of crystal and magnetic structure parameters of the multiferroic (0.9)BiFeO3 + (0.1)BaTiO3 over region (300 – 1000) K. Crystal structure is rhombohedral over whole temperature region and it is described by the R3c space group. The lattice parameters increase with temperature. The Ba ions are placed in the Bi sublattice and the Ti ions partly occupy the Fe sublattice. Assuming that the sample has a modulated magnetic structure with the propagation vector k = [0.0045, 0.0045, 0], we obtained a temperature dependence of the Fe-ion magnetic moment. The value of the moment is equaled to be μ = (3.46 ± 0.05) μB at 300 K and becomes zero at 600 K. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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