Temperature-induced magnetization reversal in BiFe0.5Mn0.5O3 synthesized at high pressure

被引:100
作者
Mandal, P. [1 ]
Sundaresan, A. [1 ]
Rao, C. N. R. [1 ]
Iyo, A. [2 ]
Shirage, P. M. [2 ]
Tanaka, Y. [2 ]
Simon, Ch. [3 ]
Pralong, V. [3 ]
Lebedev, O. I. [3 ]
Caignaert, V. [3 ]
Raveau, B. [3 ]
机构
[1] Jawaharlal Nehru Ctr Adv Sci Res, Chem & Phys Mat Unit, Int Ctr Mat Sci, Bangalore 560064, Karnataka, India
[2] Natl Inst Adv Ind Sci & Technol, NeRI, Tsukuba, Ibaraki 3058568, Japan
[3] Univ Caen, CNRS ENSICAEN, CRISMAT Lab, F-14050 Caen, France
来源
PHYSICAL REVIEW B | 2010年 / 82卷 / 10期
关键词
N-TYPE FERRIMAGNETISM; WEAK FERROMAGNETISM; PEROVSKITE;
D O I
10.1103/PhysRevB.82.100416
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
BiFe0.5Mn0.5O3 could be stabilized in the perovskite structure by preparing it under high pressure and temperature. It has an orthorhombic structure with a possible ordered arrangement of Fe and Mn double rows and shows a magnetic ordering at high temperature (270 K). Low-temperature isothermal-magnetization measurements indicate the ground state to be antiferromagnetic with a spin canting. Surprisingly, it exhibits magnetization reversal at low applied fields below a compensation temperature, T*. Below T*, the sign of the magnetization can be switched between negative and positive value reversibly by increasing and decreasing the field. Magnetization reversal in this oxide seems to result from a competition between single-ion magnetocrystalline anisotropy and antisymmetric Dzyaloshinsky-Moriya interactions.
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页数:4
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