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- Title
Structural Transition and Multiferroic Properties of Eu-Doped BiFeO<sub>3</sub> Thin Films.
- Authors
Zhongqiang Hu; Meiya Li; Jun Liu; Ling Pei; Jing Wang; Benfang Yu; Xingzhong Zhao
- Abstract
The Bi1− xEu xFeO3 ( x=0, 0.05, 0.10, 0.15, 0.20, and 0.30) thin films were grown by pulsed laser deposition on Pt/Ti/SiO2/Si substrates, and the effects of Eu content on the structure and multiferroic properties were investigated. A structural transition from rhombohedral R3 c to orthorhombic Pbnm occurred in the film with x=0.15 due to the increase of the Eu content. Superior multiferroic properties were obtained in the film with x=0.10, giving a remanent polarization Pr=74 μC/cm2 and a coercive field Ec=250 kV/cm at an applied electric field E=560 kV/cm, a good antifatigue property, and a saturated magnetization Ms=3.5 emu/cm3. These significantly improved ferroelectric properties could be attributed to the appropriate lattice distortion and the lower leakage current due to the doping, while the enhanced ferromagnetism might be ascribed to the substitution-induced suppression of the spiral spin modulation.
- Subjects
SOLID state electronics; SURFACES (Technology); MAGNETISM; ELECTRIC fields; ELECTROMAGNETIC fields; THIN films; SOLID state physics; SEMICONDUCTORS
- Publication
Journal of the American Ceramic Society, 2010, Vol 93, Issue 9, p2743
- ISSN
0002-7820
- Publication type
Article
- DOI
10.1111/j.1551-2916.2010.03766.x