Substitution-induced phase transition and enhanced multiferroic properties of Bi1−xLaxFeO3 ceramics
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- 17 April 2006
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 88 (16)
- https://doi.org/10.1063/1.2195927
Abstract
Single-phase, insulating Bi1−xLaxFeO3Bi1−xLaxFeO3 (BLFOx, x = 0.05x=0.05, 0.10, 0.15, 0.20, 0.30, and 0.40) ceramics were prepared. An obvious phase transition from rhombohedral to orthorhombic phase was observed near x = 0.30x=0.30. It is found that the phase transition destructs the spin cycloid of BiFeO3BiFeO3 (BFO), and therefore, releases the locked magnetization and enhances magnetoelectric interaction. As a result, improved multiferroic properties of the BLFO0.30 ceramics with remnant polarization and magnetization (2Pr2Pr and 2Mr2Mr) of 22.4 μC/cm222.4μC∕cm2 and 0.041 emu/g0.041emu∕g, respectively, were establishedKeywords
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