| Abstract | 第7-10页 |
| 摘要 | 第11-13页 |
| List of Symbols and Abbreviations | 第13-30页 |
| CHAPTER 1 Introduction and Background | 第30-52页 |
| 1.1 General Introduction | 第30-31页 |
| 1.2 Crystal Structure | 第31-33页 |
| 1.2.1 Perovskite Structure | 第31-32页 |
| 1.2.2 Aurivillius Structure | 第32-33页 |
| 1.3 Structural Variations and Cation Substitution in Aurivillius Phases | 第33-36页 |
| 1.3.1 A-site Substitution | 第33-34页 |
| 1.3.2 B-site Substitution | 第34-35页 |
| 1.3.3 A and B-site Co-substitution | 第35-36页 |
| 1.4 Factors Affecting the Structural Stability of the Aurivillius Phases | 第36-37页 |
| 1.5 Multiferroicity in Aurivillius Phases | 第37-39页 |
| 1.6 Dielectric Phenomena | 第39-41页 |
| 1.7 Complex Impedance Spectroscopy | 第41-42页 |
| 1.8 Rietveld Analysis | 第42-43页 |
| 1.9 Synthesis and Characterization of the Materials | 第43-44页 |
| 1.9.1 Synthesis of the Materials | 第43-44页 |
| 1.9.2 Characterization of the Materials | 第44页 |
| 1.10 Objective of this Research | 第44-45页 |
| 1.11 Thesis Organization and Significance | 第45-47页 |
| References | 第47-52页 |
| CHAPTER 2 Grains and Grain Boundaries Contribution to Dielectric Relaxations and Conduction of Bi_5Ti_3FeO_(15) Ceramics | 第52-64页 |
| 2.1 Introduction | 第52-53页 |
| 2.2 Experimental Procedure | 第53页 |
| 2.3 Results and Discussion | 第53-60页 |
| 2.3.1 Phase Identification, Microstructure and Dielectric Spectra | 第53-55页 |
| 2.3.2 Relaxation Behavior and Electrical Properties of Grains and Grain Boundaries | 第55-58页 |
| 2.3.3 Relaxation-Defect Behavior and Condution Mechanism | 第58-60页 |
| 2.4 Conclusions | 第60-61页 |
| References | 第61-64页 |
| CHAPTER 3 A-site Substitution in Aurivillius Bi_5Ti_3FeO_(15) Ceramics by Rare Earth Elements | 第64-105页 |
| 3.1 Effect of Nd3+ Substitution for Bi~(3+) on Dielectric Properties and Conduction Behavior of Aurivillius NdBi_4Ti_3FeO_(15) Ceramics | 第65-77页 |
| 3.1.1 Introduction | 第65-66页 |
| 3.1.2 Experimental Procedure | 第66-67页 |
| 3.1.3 Results and Discussion | 第67-77页 |
| 3.1.3.1 Phase Identification and Dielectric Characterization | 第67-71页 |
| 3.1.3.2 Relaxation Behavior and Electrical Properties of Grains and Grain Boundaries | 第71-73页 |
| 3.1.3.3 Electrical Properties and Kinetic Analysis of Relaxation-Conduction Behaviours | 第73-77页 |
| 3.2 Dielectric Relaxation and Electrical Properties of Sm_(0.5)Bi_(4.5)Ti_3FeO_(15) Ceramics | 第77-86页 |
| 3.2.1 Introduction | 第77-78页 |
| 3.2.2 Experimental Procedure | 第78-79页 |
| 3.2.3 Results and Discussion | 第79-86页 |
| 3.2.3.1 Phase Identification | 第79-80页 |
| 3.2.3.2 Dielectric Properties | 第80-81页 |
| 3.2.3.3 Impedance Spectroscopy | 第81-83页 |
| 3.2.3.4 Modulus Analysis | 第83-84页 |
| 3.2.3.5 Conductivity Behavior | 第84-86页 |
| 3.3 Structural, Magnetic and Dielectric Properties of Bi_4Nd_(0.5)Gd_(0.5)Ti_3FeO_(15) Ceramics | 第86-97页 |
| 3.3.1 Introduction | 第86-87页 |
| 3.3.2 Experimental Procedure | 第87-88页 |
| 3.3.3 Results and Discussion | 第88-97页 |
| 3.3.3.1 Crystal Structure | 第88-90页 |
| 3.3.3.2 Dielectric Characterization | 第90-91页 |
| 3.3.3.3 Relaxation Behavior and Electrical Properties | 第91-94页 |
| 3.3.3.4 Defect Behavior and Relaxation-Conduction Mechanism | 第94-96页 |
| 3.3.3.5 Magnetic Properties | 第96-97页 |
| 3.4 Summary | 第97-99页 |
| References | 第99-105页 |
| CHAPTER 4 B-site substitution in Aurivillius Bi_4Ti_3O_(12) Ceramics | 第105-146页 |
| 4.1 Contribution of Grains and Grain Boundaries to Dielectric Relaxations andConduction of Aurivillius Bi_4Ti_2Fe_(0.5)Nb_(0.5)O_(12) Ceramics | 第106-117页 |
| 4.1.1 Introduction | 第106-107页 |
| 4.1.2 Experimental Procedure | 第107-108页 |
| 4.1.3 Results and Discussion | 第108-117页 |
| 4.1.3.1 Overall Characterization of Microstructure and Dielectric Properties | 第108-109页 |
| 4.1.3.2 Relaxation Behavior and Electrical Properties of Grains and Grain Boundaries | 第109-112页 |
| 4.1.3.3 Defect Behavior and Relaxation | 第112-117页 |
| 4.2 Effect of Fe/Ta Doping on Structural, Dielectric and Electrical Properties of Bi_4Ti_(2.5)Fe_(0.25)Ta_(0.25)O_(12) Ceramics | 第117-129页 |
| 4.2.1 Introduction | 第117-119页 |
| 4.2.2 Experimental Procedure | 第119-120页 |
| 4.2.3 Results and Discussion | 第120-129页 |
| 4.2.3.1 Crystal Structure | 第120-123页 |
| 4.2.3.2 Dielectric Properties and Ferroelectric Transition | 第123-125页 |
| 4.2.3.3 Complex Impedance Spectroscopy | 第125-126页 |
| 4.2.3.4 Electric Modulus Analysis | 第126-128页 |
| 4.2.3.5 Electrical Properties and Kinetic Analysis of Conduction-Relaxation Behaviors | 第128-129页 |
| 4.3. Dielectric Relaxations and Electrical Properties of Aurivillius Bi_(3.5)La_(0.5)Ti_2Fe_(0.5)Nb_(0.5)O_(12) Ceramics | 第129-138页 |
| 4.3.1 Introduction | 第129-130页 |
| 4.3.2 Experimental Procedure | 第130-131页 |
| 4.3.3 Results and Discussion | 第131-138页 |
| 4.3.3.1 Phase Identification and Dielectric Spectra | 第131-133页 |
| 4.3.3.2 Relaxation Behavior and Electrical Properties | 第133-136页 |
| 4.3.3.3 Defect-Relaxation Behavior and Conduction Mechanism | 第136-138页 |
| 4.4 Summary | 第138-140页 |
| References | 第140-146页 |
| CHAPTER 5 Effect of Na and K Doping in Aurivillius Layer Structured Ceramics | 第146-168页 |
| 5.1 Effect of Na Dopping on Dielectric Relaxation and Conduction Behaviors of Aurivillius Na_(0.5)Bi_(4.5)Ti_4O_(15) Ceramics | 第147-155页 |
| 5.1.1 Introduction | 第147-148页 |
| 5.1.2 Experimental Procedure | 第148页 |
| 5.1.3 Results and Discussion | 第148-155页 |
| 5.1.3.1 Phase Identification | 第148-149页 |
| 5.1.3.2 Dielectric Properties | 第149-151页 |
| 5.1.3.3 Complex Impedance Analysis | 第151-152页 |
| 5.1.3.4 Electric Modulus Spectroscopy | 第152-153页 |
| 5.1.3.5 Conductivity | 第153-155页 |
| 5.2 New Bismuth Layer-Structured K_(0.5)Gd_(0.5)Bi_4Ti_4O_(15) Ceramics: Dielectric Behaviorand Electrical Properties | 第155-163页 |
| 5.2.1 Introduction | 第155-156页 |
| 5.2.2 Experimental Procedure | 第156-157页 |
| 5.2.3 Results and Discussion | 第157-163页 |
| 5.2.3.1 Phase Identification | 第157页 |
| 5.2.3.2 Overall Characterization of Dielectric Behaviors | 第157-159页 |
| 5.2.3.3 Relaxation Behaviors: Impedance and Modulus Analysis | 第159-161页 |
| 5.2.3.4 Defect Structure and Electrical Properties | 第161-163页 |
| 5.3 Summary | 第163-164页 |
| References | 第164-168页 |
| CHAPTER 6 Effect of Reduction/Oxidation Annealing on Dielectric Relaxation and Electrical Propertiesof Aurivillius Na_(0.5)Gd_(0.5)Bi_4Ti_4O_(15) Ceramics | 第168-186页 |
| 6.1 Introduction | 第168-169页 |
| 6.2 Experimental Procedure | 第169-170页 |
| 6.3 Results and Discussion | 第170-181页 |
| 6.3.1 Phase Identification | 第170-171页 |
| 6.3.2 Overall Dielectric Characterization and the Influence of Annealing Atmospher | 第171-173页 |
| 6.3.3 Relaxation Behavior and Electrical Properties | 第173-174页 |
| 6.3.4 Kinetic Analysis of Relaxation Behavior with Annealing Atmosphere | 第174-176页 |
| 6.3.5 Defect Structure | 第176-177页 |
| 6.3.6 Influence of Annealing Atmosphere on Defect -Relaxation-ConductionMechanism | 第177-181页 |
| 6.4 Summary | 第181-182页 |
| References | 第182-186页 |
| CHAPTER 7 Conclusions and Future Perspectives | 第186-194页 |
| 7.1 Conclusions | 第186-190页 |
| 7.2 Innovative Features of Current Research | 第190-192页 |
| 7.3 Recommendations for Future Research | 第192-194页 |
| Acknowledgement | 第194-196页 |
| List of Published & Accepted Papers | 第196-199页 |
