Mutual promotion effect of Pr and Mg co-substitution on structure and multiferroic properties of BiFeO₃ ceramic

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• 作者：Peng He^a ; Zhi-Ling Hou^a ; ^{houzl@mail.buct.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; ^{zhilinghou@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Chan-Yuan Wang^b ; Zhong-Jun Li^a ; Jian Jing^a ; Song Bi^c
• 关键词：Bismuth ferrite ceramic ; Magnetic properties ; Dielectric properties ; Doping
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：43
• 期：1
• 页码：262-267
• 全文大小：1489 K

文摘

The structure and multiferroic properties of Pr and Mg co-substituted BiFeO₃ nanoparticles were investigated in this paper. The magnetization is dramatically increased after co-doping, originated from the release of latent magnetization locked within the cycloid structure. The release of latent magnetization after Pr and Mg co-doping is stronger than the sum of two single doping, indicating a nonlinear enhancement in Pr and Mg co-doping. Meanwhile, the co-substitution can effectively reduce the leakage current and increase the dielectric constant. Compared to the pristine bismuth ferrite, the Bi_0.95Pr_0.03Mg_0.02FeO₃ exhibits more than five-fold improved magnetization with simultaneously improved electrical properties, which suggests the co-doped BiFeO₃ would be more competitive in applications of data storage and magnetoelectric sensors.