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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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