The effect of temperature on parameters of hyperfine interactions and spatial spin-modulated structure in multiferroic BiFeO3

被引：4
|
作者：
Rusakov, V. S. [1 ]
Pokatilov, V. S. [2 ]
Sigov, A. S. [2 ]
Matsnev, M. E. [1 ]
Gapochka, A. M. [1 ]
Pyatakov, A. P. [1 ]
机构：
[1] Lomonosov Moscow State Univ, Fac Phys, Moscow, Russia
[2] MIREA Russian Technol Univ, Dept Nanoelect, Moscow, Russia
来源：
FERROELECTRICS | 2020年 / 569卷 / 01期
关键词：
Multiferroic BiFeO3; anharmonicity parameter; magnetic anisotropy; hyperfine interaction; Mö ssbauer spectroscopy;
D O I：
10.1080/00150193.2020.1822682
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A detailed study of the temperature-dependent evolution of the hyperfine interaction parameters and spatial spin-modulated structure in multiferroic BiFeO3 has been carried out by Fe-57 Mossbauer spectroscopy in a wide temperature range, including the temperature of the magnetic phase transition. Temperature dependences of the hyperfine magnetic field distributions, isotropic and anisotropic contributions to hyperfine magnetic fields, quadrupole shift and the anharmonicity parameter were measured. A change in the sign of the effective magnetic anisotropy constant was detected at a temperature T approximate to 330 K. At this temperature, the magnetic anisotropy changes from the "easy axis" to the "easy plane" type.
引用
收藏
页码：286 / 294
页数：9
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