Unusual magnetic properties of the polar orthorhombic BiFe0.5Sc0.5O3 perovskite

被引：8
|
作者：
Fedorchenko, A., V [1 ,2 ]
Fertman, E. L. [2 ]
Salak, A. N. [3 ]
Desnenko, V. A. [2 ]
Cizmar, E. [1 ]
Feher, A. [1 ]
Vaisburd, A., I [4 ]
Olekhnovich, N. M. [5 ]
Pushkarev, A., V [5 ]
Radyush, Yu, V [5 ]
Zarkov, A. [6 ]
Kareiva, A. [6 ]
机构：
[1] Safarik Univ, Fac Sci, Inst Phys, Pk Angelinum 9, Kosice 04154, Slovakia
[2] NASU, B Verkin Inst Low Temp Phys & Engn, Nauky 47, UA-61103 Kharkov, Ukraine
[3] Univ Aveiro, Dept Mat & Ceram Engn CICECO, P-3810193 Aveiro, Portugal
[4] Kharkov Natl Univ, 4 Svobody Sq, UA-61000 Kharkov, Ukraine
[5] Sci Pract Mat Res Ctr NASB, P Brovka 19, Minsk 220072, BELARUS
[6] Vilnius Univ, Inst Chem, Naugarduko 24, LT-03225 Vilnius, Lithuania
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2018年 / 465卷
基金：
欧盟地平线“2020”;
关键词：
Multiferroic perovskites; Magnetic susceptibility; Weak ferromagnetism; Glassy magnetic behavior; MULTIFERROICS; BISMUTH;
D O I：
10.1016/j.jmmm.2018.06.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetic properties of new multiferroic BiFe0.5Sc0.5O3 perovskite which exists in two different orthorhombic polymorphs, the antipolar Pnma and the polar Ima2, were studied using a SQUID-magnetometer technique in magnetic fields up to 50 kOe in the temperature range of 5-300 K. Both polymorphs show a weak ferromagnetic component below the Neel temperature, T-N similar to 220 K. A wide cusp-like anomaly of the temperature dependent magnetic susceptibility was revealed below 200 K. The anomaly is dependent on the magnetic field applied and can be associated with the glassy magnetic behavior of the compound. The best fit of the initial magnetization curves taken at each temperature can be obtained as a sum of two contributions, namely the nonlinear in field and the linear one. The nonlinear contribution appeared to be temperature and magnetic field dependent, which is in a good agreement with the magnetization experimentally obtained as a function of temperature in different magnetic fields applied. Increase of external magnetic field leads to a decrease of the nonlinear contribution to the total magnetic moment
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收藏
页码：328 / 332
页数：5
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