Magnetization and magnetoelectric effect in Bi1-xLaxFeO3 (0≤x≤0.15)

被引：132
作者：
Le Bras, G. [1 ]
Colson, D. [1 ]
Forget, A. [1 ]
Genand-Riondet, N. [1 ]
Tourbot, R. [1 ]
Bonville, P. [1 ]
机构：
[1] CEA, Ctr Etudes Saclay, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France
来源：
PHYSICAL REVIEW B | 2009年 / 80卷 / 13期
关键词：
PHASE-TRANSITIONS; MULTIFERROIC BIFEO3; SINGLE-PHASE;
D O I：
10.1103/PhysRevB.80.134417
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on magnetization and magnetocapacitance measurements in the Bi1-xLaxFeO3 series for 0 <= x <= 0.15. We confirm that doping with La reduces the threshold magnetic field H-c for cancelling the magnetic spiral phase, and we show that H-c decreases as the La content increases up to x=0.15, which is the highest concentration for maintaining the noncentrosymmetric rhombohedral structure of BiFeO3. Measurements of the dielectric constant as a function of magnetic field in the series also show a maximum magnetocapacitance for x=0.15.
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页数：6
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