Correlation between ferromagnetism and the concentration of interfacial defects in multiferroic Bi₇Fe_2.75Co_0.25Ti₃O₂₁ studied by positron annihilation

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• 作者：W.N. Ge^a ; ^b ; ¹ ; X.N. Li^c ; ¹ ; J.P. Xu^a ; ^b ; S.J. Huang^d ; J.D. Liu^a ; ^b ; Z. Zhu^c ; Z.P. Fu^c ; Y.L. Lu^c ; ^{yllu@ustc.edu.cn} ; B.J. Ye^a ; ^b ; ^{bjye@ustc.edu.cn}
• 关键词：Interfacial defects ; Saturation magnetization ; Annealing ; Multiferroic materials
• 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：394
• 期：Complete
• 页码：61-66
• 全文大小：2363 K
• 卷排序：394

文摘

Interfacial defects and magnetization of Bi7Fe2.75Co0.25Ti3O21 were studied. Interfacial defects disappear slowly with the increase of annealing temperature. Saturation magnetization decreased with increasing the annealing temperature. Higher concentration of interfacial defects bring higher saturation magnetization.