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所属单位：材料科学与技术学院

发表刊物：CERAMICS INTERNATIONAL

关键字：BiFeO3 Morphotropic phase boundary Piezoresponse Phase transition

摘要：The polycrystalline Sm and Mn co-substituted bismuth ferrites Bi1-xSmxFe0.95Mn0.05O3 (x = 0.08 and 0.16) with composition near the morphotropic phase boundary have been prepared using a modified solid-state reaction method. The Bi0.92Sm0.08Fe0.95Mn0.05O3 ceramic possesses single rhombohedral phase, whereas the Bi0.84Sm0.16Fe0.95Mn0.05O3 ceramic consists of both the R3c and Porno phases. The addition of Sm and Mn not only enhances density and grain uniformity but also suppresses the spiral spin modulation which improves the polarization and magnetization. Excellent ferroelectric properties of microdomains are attained in the Bi0.92Sm0.08Fe0.95Mn0.05O3 ceramic. The transition of the nonpolar/antipolar phase to the polar phase and the polarization switching induced by the electric field occur in the Bi0.84Sm0.16Fe0.95Mn0.05O3 ceramic.

ISSN号：0272-8842

是否译文：否

发表时间：2018-08-01

合写作者：Zhou, S. D.,李扬,吉航

通讯作者：王寅岗