水热合成纳米铁酸钇材料制备及性能研究
毕业论文关键词： 水热法； 铁酸钇； YFeO3； 磁光材料
Preparation of YFeO3 nanomaterials and study of their properties
Abstract：Because of the merit of high magnetooptical figure in the near-infrared band, a
low saturation magnetization and a high Curie temperature, crystal YFeO3 has a number
of advantages in the application of the device, and thus become a kind of new
Magneto-optical materials. A facile hydrothermal synthesis route was utilized to fabricate
phase-pure YFeO3 crystallites. Effects of the initial potassium hydroxide (KOH)
concentration, reaction temperature, and duration time on the crystallinity and
morphologies of YFeO3 were systematically investigated. Furthermore, the phase
composition and structure was analytical reviewed by XRD diffraction, and the
morphology was characterized by scanning electron microscopy (SEM). The results
indicated that the appropriate KOH concentration and temperature was beneficial for the
formation of phase-pure YFeO3. Finally, it is verified from the XRD results that
phase-pure YFeO3 could be synthesized when the pH was 10.5 at 260C and 72h.
Key Words: hydro-thermal method; Yttrium iron; YFeO3; magneto-optic material
目 录
1 绪论 1
1.1 磁光效应与其应用 . 1
1.1.1 磁光效应 . 1
1.1.2 法拉第效应 . 1
1.1.3 法拉第效应的应用 . 1
1.2 磁光晶体材料 . 2
1.2.1 磁光晶体材料的应用 . 2
1.2.2 传统磁光晶体材料 . 3
1.2.3 各种磁光晶体材料的研发以及数据 . 4
1.2.4 磁光晶体材料的发展趋势 . 4
1.3 铁酸钇晶体材料 . 5
1.3.1 铁酸钇的开发优势 . 5
1.3.2 铁酸钇的物化特性 . 5
1.3.3 铁酸钇的制备方法 . 6
1.4 水热法 . 8
1.4.1 水热法的原理与应用 . 8
1.4.2 水热法的特点 . 8
1.4.3 水热合成装置 . 9
2 实验部分 . 11
2.1 实验原料及实验仪器 11
2.2 实验过程 12
2.3 分析表征 16
3 结果与讨论 . 17
3.1 XRD 分析 18
3.2 粒度分析 23
3.3 扫描电镜分析 25
4 结论 . 26
致 谢 27
参考文献 28 1 绪论
1.1 磁光效应与其应用
1.1.1 磁光效应
磁光效应是指在磁场作用下，物质的电磁特性（如磁导率、介电常数、磁化强度、
磁畴结构、磁化方向等）会发生变化，因而使通过它的光的传输特性（如偏振状态、
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