纳化GaFeO3的磁电特性和莫林类型的旋转转变
Zamzama Rahmany1, Savitha Pillai S1
1Department of Physics, University of Kerala, Karyavattom 695581, Thiruvananthapuram, Kerala, India.
概括
兴奋剂增强了铁 (GaFeO3) 的磁性和电性,增加了其磁电合. 这项研究揭示了高达50%的Na注显著的结构和性质变化.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 铁酸盐 (GaFeO3) 是一种具有潜在应用的多铁材料.
- 了解兴奋剂对其性能的影响对于材料优化至关重要.
研究的目的:
- 研究 (Na) 兴奋剂对GaFeO3.3的结构,磁,电和磁电性质的影响.
- 探索Na度与材料特性之间的相关性.
主要方法:
- 用瑞特维尔德精细化进行结构分析的X射线衍射 (XRD).
- 福里埃变换红外 (FTIR) 和拉曼光谱用于相位纯度的确认.
- 场发射扫描电子显微镜 (FESEM) 用于形态学研究.
- 温度依赖磁化和拉曼光谱用于磁性和结构转变分析.
- 电气测量泄漏电流和介电性质.
- 磁电合系数测量. 磁电合系数测量.
主要成果:
- 单相三角形结构维持了高达50%的Na注,并增加了晶格应变.
- 在室温下增强的铁磁性质和莫林式过渡温度的变化 (从182 K到217 K).
- 增加了泄漏电流密度 (从10^-8 A cm^-2到10^-4-10^-5 A cm^-2) 和介电常数,使用Na注.
- 在x=0.05 Na度下观察到的最佳磁电合系数为36.2 ps m^-1 .
结论:
- 在GaFeO3中,高达50%的Na注可保持相位纯度,同时显著改变结构性,磁性和电气性质.
- 纳米剂有效调整磁性过渡温度并增强磁电合,表明了先进设备应用的潜力.
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