離子摻雜能夠增強(qiáng)BiFeO₃(BFO)薄膜的鐵電性,但是其弱磁性的問題未被有效改善;復(fù)合磁性材料增強(qiáng)了BFO薄膜材料鐵磁性,但又會導(dǎo)致復(fù)合薄膜鐵電性惡化的問題。本論文采用磁性層的摻雜來調(diào)控復(fù)合薄膜的結(jié)構(gòu)和多鐵性能。本論文采用溶膠凝膠法制備了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

【文章頁數(shù)】：78 頁

【學(xué)位級別】：碩士

【文章目錄】：
摘要
ABSTRACT
1 緒論
    1.1 引言
    1.2 多鐵性材料BiFeO₃概述
        1.2.1 BiFeO₃材料的結(jié)構(gòu)
        1.2.2 BiFeO₃材料的鐵電性與鐵磁性
    1.3 磁性材料CoFe₂O₄概述
    1.4 BiFeO₃材料的研究進(jìn)展
        1.4.1 BiFeO₃的摻雜改性研究現(xiàn)狀
        1.4.2 鐵酸鉍基多鐵復(fù)合薄膜的研究現(xiàn)狀
    1.5 本論文的研究意義及內(nèi)容
2 實(shí)驗(yàn)
    2.1 實(shí)驗(yàn)原料及主要設(shè)備
    2.2 實(shí)驗(yàn)工藝
        2.2.1 基板的前期處理
        2.2.2 前驅(qū)體溶液的配制
        2.2.3 薄膜與電極的制備
    2.3 薄膜的表征和性能測試
        2.3.1 薄膜的結(jié)構(gòu)表征
        2.3.2 薄膜的微觀形貌表征
        2.3.3 薄膜的化學(xué)成分表征
        2.3.4 薄膜的漏電流測試
        2.3.5 薄膜的介電性能和阻抗測試
        2.3.6 薄膜的鐵電性能測試
        2.3.7 薄膜的鐵磁性能測試
3 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的制備及性能研究
    3.1 引言
    3.2 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的制備
    3.3 結(jié)果分析及討論
        3.3.1 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的結(jié)構(gòu)
        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薄膜的漏電流
        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薄膜的介電性能
        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薄膜的鐵電性能
        3.3.9 Bi_0.97-xSr_0.03Gd_xFe_0.94Mn_0.04Co_0.02O₃薄膜的鐵磁性能
    3.4 本章小結(jié)
4 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/Co_1-yMn_yFe₂O₄薄膜的制備及性能研究
    4.1 引言
    4.2 樣品制備
    4.3 結(jié)果分析及討論
        4.3.1 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/Co_1-yMn_yFe₂O₄薄膜的結(jié)構(gòu)
        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薄膜的介電性能
        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薄膜的鐵電性能
        4.3.7 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/Co_1-yMn_yFe₂O₄薄膜的鐵磁性能
    4.4 本章小結(jié)
5 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/CoFe_2-zGd_zO₄薄膜的制備及性能研究
    5.1 引言
    5.2 樣品制備
    5.3 結(jié)果分析及討論
        5.3.1 CoFe_2-zGd_zO₄薄膜的結(jié)構(gòu)
        5.3.2 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/CoFe_2-zGd_zO₄薄膜的結(jié)構(gòu)
        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薄膜的漏電流
        5.3.5 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/CoFe_2-zGd_zO₄薄膜介電性能
        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薄膜的鐵電性能
        5.3.8 Bi_0.88Sr_0.03Gd_0.09Fe_0.94Mn_0.04Co_0.02O₃/CoFe_2-zGd_zO₄薄膜的鐵磁性能
    5.4 本章小結(jié)
6 結(jié)論與展望
    6.1 結(jié)論
    6.2 展望
致謝
參考文獻(xiàn)
攻讀學(xué)位期間的學(xué)術(shù)成果



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