Bi3Mn3O11:一种新的KSbO3型随机铁磁体,具有高T (C) 值
Alexei A Belik1, Eiji Takayama-Muromachi
1International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. Alexei.Belik@nims.go.jp
Journal of the American Chemical Society
|July 9, 2009
概括
一种新型的氧化,Bi(3)Mn(3)O(11),被合成,被发现是一种铁磁体. 这种化合物表现出有趣的磁性和结构适应性,可能会振兴KSbO(3) 型材料的研究.
科学领域:
- 固态化学 固态化学
- 材料科学是一种材料科学.
- 磁力学 磁力学 是一种
背景情况:
- 化合物KSbO(3) 家族以其结构适应性而闻名.
- 探索具有独特磁性质的新材料对于技术进步至关重要.
研究的目的:
- 为了合成和描述一种新的化合物,Bi(3)Mn(3)O(11),具有KSbO(3) 类型的结构.
- 研究合成化合物的结构,化学和磁性特性.
- 要了解Bi(3)Mn(3)O(11) 的热稳定性和相变.
主要方法:
- 高压合成技术. 高压合成技术.
- 结构特征 (例如,X射线衍射).
- 测量磁性特性 (例如,SQUID磁力测量).
- 热分析 (例如,热重力测量分析).
主要成果:
- 成功合成了具有KSbO(3) 类型结构的Bi(3) Mn(3) O(11 .
- 生物3Mn3O11表现出具有高基里温度 (Tc) 的铁磁性行为.
- 该化合物表现出热不稳定性,在加热时逐渐失去氧气,形成具有改变磁性特性的新相.
结论:
- 发现Bi(3)Mn(3)O(11) 扩大了KSbO(3) 结构家族中已知的材料.
- 值得注意的是,尽管有随机的阳离子分布,但在Bi(3) Mn(3) O ((11) 中观察到的铁磁性是值得注意的.
- 热氧损失和由此产生的磁性特性变化凸显了该化合物的适应性和进一步研究的潜力.
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