磁性层掺杂调控BiFeO 3 基/CoFe 2 O 4 复合薄膜的多铁性能研究

发布时间：2023-12-24 19:50

　　离子掺杂能够增强BiFeO₃(BFO)薄膜的铁电性,但是其弱磁性的问题未被有效改善;复合磁性材料增强了BFO薄膜材料铁磁性,但又会导致复合薄膜铁电性恶化的问题。本论文采用磁性层的掺杂来调控复合薄膜的结构和多铁性能。本论文采用溶胶凝胶法制备了Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃(BSG_xFMC)薄膜、Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/Co_1-yMn_yFe₂O₄(BSGFMC/CM_yFO)和Bi_0.88Sr_0.03

【文章页数】：78 页

【学位级别】：硕士

【文章目录】：
摘要
ABSTRACT
1 绪论
    1.1 引言
    1.2 多铁性材料BiFeO₃概述
        1.2.1 BiFeO₃材料的结构
        1.2.2 BiFeO₃材料的铁电性与铁磁性
    1.3 磁性材料CoFe₂O₄概述
    1.4 BiFeO₃材料的研究进展
        1.4.1 BiFeO₃的掺杂改性研究现状
        1.4.2 铁酸铋基多铁复合薄膜的研究现状
    1.5 本论文的研究意义及内容
2 实验
    2.1 实验原料及主要设备
    2.2 实验工艺
        2.2.1 基板的前期处理
        2.2.2 前驱体溶液的配制
        2.2.3 薄膜与电极的制备
    2.3 薄膜的表征和性能测试
        2.3.1 薄膜的结构表征
        2.3.2 薄膜的微观形貌表征
        2.3.3 薄膜的化学成分表征
        2.3.4 薄膜的漏电流测试
        2.3.5 薄膜的介电性能和阻抗测试
        2.3.6 薄膜的铁电性能测试
        2.3.7 薄膜的铁磁性能测试
3 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的制备及性能研究
    3.1 引言
    3.2 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的制备
    3.3 结果分析及讨论
        3.3.1 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的结构
        3.3.2 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的形貌
        3.3.3 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的XPS分析
        3.3.4 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的漏电流
        3.3.5 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的阻抗
        3.3.6 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的介电性能
        3.3.7 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的C-V特性
        3.3.8 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的铁电性能
        3.3.9 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的铁磁性能
    3.4 本章小结
4 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/Co_1-yMn_yFe₂O₄薄膜的制备及性能研究
    4.1 引言
    4.2 样品制备
    4.3 结果分析及讨论
        4.3.1 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/Co_1-yMn_yFe₂O₄薄膜的结构
        4.3.2 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/Co_1-yMn_yFe₂O₄薄膜的形貌
        4.3.3 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/Co_1-yMn_yFe₂O₄薄膜的XPS分析
        4.3.4 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/Co_1-yMn_yFe₂O₄薄膜的介电性能
        4.3.5 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/Co_1-yMn_yFe₂O₄薄膜的C-V特性
        4.3.6 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/Co_1-yMn_yFe₂O₄薄膜的铁电性能
        4.3.7 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/Co_1-yMn_yFe₂O₄薄膜的铁磁性能
    4.4 本章小结
5 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/CoFe_2-zGd_zO₄薄膜的制备及性能研究
    5.1 引言
    5.2 样品制备
    5.3 结果分析及讨论
        5.3.1 CoFe_2-zGd_zO₄薄膜的结构
        5.3.2 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/CoFe_2-zGd_zO₄薄膜的结构
        5.3.3 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/CoFe_2-zGd_zO₄薄膜的形貌
        5.3.4 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/CoFe_2-zGd_zO₄薄膜的漏电流
        5.3.5 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/CoFe_2-zGd_zO₄薄膜介电性能
        5.3.6 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/CoFe_2-zGd_zO₄薄膜的C-V特性
        5.3.7 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/CoFe_2-zGd_zO₄薄膜的铁电性能
        5.3.8 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/CoFe_2-zGd_zO₄薄膜的铁磁性能
    5.4 本章小结
6 结论与展望
    6.1 结论
    6.2 展望
致谢
参考文献
攻读学位期间的学术成果



本文编号：3875198