本文通過固相反應法制備了化學組分分別為Bal-x)YxFe12O19（x= 0.00,0.02,0.05,0.08,0.10,0.13）,Sr0.7YxLa0.3-xFe12-y CoyO19（x=0.00,0.05,0.10,0.15&y=0.30,0.25,0.20,0.15）,Sr0.35La0.40Ca0.25Fe11.6C00.4O19,Sr0.3La0.48Ca0.25 n[Fe（2.0.4/n）O3]Co0.4（n=5.5,5.6,5.7,5.8,5.9,6.0）,和 Sr1-xCexO.6Fe2O3（0.00≤x≤0.30）五個系列M型六角鐵氧體。通過對Ba（1-x）YxFe12O19（x=0.00,0.02,0.05,0.08,0.10,0.13）,Sr0 7YxLa0.3-xFe12-y CoyO19（x=0.00,0.05,0.10,0.15&y= 0.30,0.25,0.20,0.15）,Sr0.35La0.40Ca0.25Fe11.6C00.4O19,Sr0.3La0.48Ca0.25n[Fe（2-0.4/n）O3]Co0.4（n=5.5,5.... 

【文章來源】：安徽大學安徽省 211工程院校

【文章頁數】：129 頁

【學位級別】：博士

【文章目錄】：
摘要
ABSTRACT
Chapter 1.Introduction
    1.1. Introduction to permanent magnetic materials
    1.2. Ferrites History
    1.3. Magnetic Materials Classification
    1.4. Magnetic Basic Theory
        1.4.1. Hysterosis loops, Coercivity, Remanence, Saturation Magnetisation Of The BasicTheory
        1.4.2. Superexchange Effect
        1.4.3. Spontaneous Magnetization And Magnetic Domain Structure
    1.5. Permanent Ferrites Production and Application
    1.6. Research Ideas and Significance
        1.6.1. Research Ideas
        1.6.2. Motivation of Work
Chapter 2.Structure And Ion Replacement Of M -type Permanent Ferrites
    2.1. Ferrites Magnetic Materials Classification
    2.2. M-type Ferrites Crystal Structure
    2.3. M-type ferrites Magnetocrystalline Anisotropy
    2.4. M-type ferrite Ion Substitution
2+ Ions">        2.4.1. Replace Of Me²⁺ Ions
3+ Ions">        2.4.2. Replace Of Fe³⁺ Ions
        2.4.3. Ion Combination Replacement
2- Ions">        2.4.4. Replace Of O^2- Ions
Chapter 3.Preparation and Characterization of M-type Strontium Permanent Magnets
    3.1. Experimental Reagent
    3.2. M-Type Strontium Permanent Ferrites Preparation
        3.2.1. Traditional ceramic method
        3.2.2. Hydrothermal Synthesis method
        3.2.3. School Co-Precipation Method
        3.2.4. Sol-Gel Salt Propating Combustion Method
        3.2.5. Molten Salt Method
    3.3. Preparation method and process
    3.4. Sample Characterization and Test Analysis
        3.4.1. X-ray Powder diffraction
        3.4.2. Scanning Electron Microscope
        3.4.3. Vibration Sample Magnetometer
        3.4.4. Magnetic Properties Of Permanent Magnetic Material Testing System
0.3La_0.48Ca_0.25n[Fe₍（2-0.4/n）O₃]Co_0.4 （n= 5.5,5.6,5.7,5.8, 5.9,6.0）">Chapter 4.Fabrication And analysis of the Magnetic Properties of Sr_0.3La_0.48Ca_0.25n[Fe₍（2-0.4/n）O₃]Co_0.4 （n= 5.5,5.6,5.7,5.8, 5.9,6.0）
    4.1. Introduction
    4.2. Specimen preparation
    4.3. Results & Discussions
        4.3.1. Structural characterization
        4.3.2. Magnetic Examine
1-xY_xFe₁₂O₁₉ hexaferrites">Chapter 5:Synthesis and study of Ba_1-xY_xFe₁₂O₁₉ hexaferrites
    5.1. Introduction
    5.2. Experimental procedure
    5.3. Result and Discussions
        5.3.1. Structural characterization
        5.3.2. VSM Examination
7Y_xLa_3-xFe_12-yCo_yO₁₉ hexaferrites">Chapter 6. Synthesis and investigation of Sr₇Y_xLa_3-xFe_12-yCo_yO₁₉ hexaferrites
    6.1. Introduction
    6.2. Material Preparation
    6.3. Results and Discussions
        6.3.1. Structural characterization
        6.3.2. Magnetic Examination
0.35La_0.40Ca₂₅Fe_11.6Co_0.4O₁₉ hexagonal ferrites">Chapter 7.Influence of temperature on Sr_0.35La_0.40Ca₂₅Fe_11.6Co_0.4O₁₉ hexagonal ferrites
    7.1. Introdution
    7.2. Sample Preparation
    7.3. Results and Discussions
        7.3.1. Crystal Structural Characterization & Morphology
        7.3.2. VSM Examination
Chapter 8. Ce doped M type strontium hexaferrites synthesized by Ceramic route
    8.1. Introdution
    8.2. Materials & Test Method
        8.2.1. Materials
        8.2.2. Methods
    8.3. Results and Discussions
        8.3.1. Phase Identification Analysis
        8.3.2. Magnetic Properties
CHAPTER 9. Conclusions
References
Acknowledgements
Publications



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