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在氧化物中设计可切换的极化和磁化

P Mandal¹, M J Pitcher¹, J Alaria²

¹Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK.

|September 19, 2015

概括

研究人员开发了一种新型的矿氧化物,在室温下结合铁电和铁磁. 这一突破使得低功耗,高密度的数据存储具有快速的电写和磁读能力.

科学领域:

材料科学
凝聚物质物理学
固态化学

背景情况:

铁电和铁磁材料是不可挥发性记忆的关键,但有局限性.
磁电多铁材料提供了低功耗,高密度存储的潜力,并结合了电写和磁读.
由于对立的原子要求,在单一晶体中合成具有铁电性和铁磁性的室温多铁元素具有挑战性.

研究的目的:

克服合成室温多铁材料的挑战.
开发一种具有铁电性和铁磁性的新型散装氧化物.
为了实现先进数据存储应用的快速电写和磁读.

主要方法:

在结构架构中构建磁离子的透网络.
使用形态相边界来增强极化切换和磁矩倾斜.
采用了矿氧化物的晶体工程.

主要成果:

在散装氧化物中获得室温铁电和铁磁性.
证明了增强的偏振切换和允许有序磁矩的倾斜.
创建了一个材料, 结合可切换的极化和远程磁性秩序.

结论:

开发的策略允许创建可调的多铁材料.
这种方法克服了先前在合成单相室温多重铁的局限性.
这些发现为下一代数据存储技术铺平了道路.

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