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Study of Electrical Properties and Laser Induced Voltage Effect in La1-xCaxMnO3Epitaxial Thin Films

摘要第4-6页
Abstract第6-7页
List of Symbols and Abbreviations第9-12页
Table of Contents第12-15页
Chapter 1 Introduction to La_(1-x)Ca_xMnO_3第15-35页
    1.1 Background第15-16页
    1.2 Magnetoresistance(MR)第16页
    1.3 Colossal magnetoresistance(CMR)第16-17页
    1.4 Nanostructured manganese base materials第17-19页
    1.5 Manganese base thin films第19-20页
    1.6 Parameters and properties of manganese base materials第20-27页
        1.6.1 Tolerance factor(t)第20-21页
        I.6.2 Average A-site cationic radius第21-22页
        1.6.3 Size variance第22-23页
        1.6.4 Double exchange第23-25页
        1.6.5 Super exchange第25页
        1.6.6 Jahn-Teller effect第25-27页
    1.7 Phase diagram of La_(1-x)Ca_xMnO_3第27-28页
    1.8 Crystal structure and crystal symmetry of La_(1-x)Ca_xMnO_3第28-29页
    1.9 Electrical transport properties第29-30页
    1.10 Laser induced voltage(LIV)effect第30-33页
    1.11 Applications of magnetic nanostructural thin films第33-34页
    1.12 Motivation of the present work第34-35页
Chapter 2 Experimental Work第35-48页
    2.1 Introduction第35页
    2.2 Synthesis procedures第35-39页
        2.2.1 Sol-Gel method第35-38页
        2.2.2 Co-precipitation method第38-39页
    2.3 Thin film preparation by PLD method第39-41页
    2.4 Characterization and measurements第41-48页
        2.4.1 Simultaneous thermal analysis(STA)第42-43页
        2.4.2 X-ray diffraction第43-44页
        2.4.3 Scanning electron microscopy(SEM)第44-45页
        2.4.4 Atomic force microscopy(AFM)第45-46页
        2.4.5 Electrical transport properties(R-T)measurement第46-48页
Chapter 3 Synthesis and Characterization of La_(1-x)Ca_xMnO_3 Polycrystalline Targets第48-66页
    3.1 Introduction第48页
    3.2 Experimental procedures第48-57页
        3.2.1 Powder preparation第48-53页
        3.2.2 Thermal analysis第53-55页
        3.2.3 Sintering process第55-57页
        3.2.4 Characterization第57页
    3.3 Results and discussion第57-65页
        3.3.1 Sol-Gel method第57-62页
        3.3.2 Co-precipitation method第62-65页
    3.4 Summary第65-66页
Chapter 4 Studied on La_(1-x)Ca)xMnO_3 Epitaxial Thin Films第66-84页
    4.1 Introduction第66-67页
    4.2 Experimental procedure第67-70页
        4.2.1 Substrate and target preparation第67-68页
        4.2.2 Film deppsition第68-70页
    4.3 Results and discussion第70-83页
        4.3.1 Effect of deposition oxygen pressure第70-71页
        4.3.2 Effect of annealing oxygen pressure第71-73页
        4.3.3 Effect of Ca contents第73-83页
    4.4 Summary第83-84页
Chapter 5 Laser Induced Voltage Effect on La_(1-x)Ca_xMnO_3第84-92页
    5.1 Introduction第84-85页
    5.2 Experimental procedures第85页
    5.3 Results and discussion第85-91页
    5.4 Summary第91-92页
Chapter 6 Conclusions and Future Works第92-95页
    6.1 Conclusions第92-93页
    6.2 Novelty第93-94页
    6.3 Future Works第94-95页
Acknowledgements第95-96页
References第96-102页
Appendix: Papers published during the doctoral student第102-104页

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