Investigation of the properties of multiferroic crystals at low temperatures: A Visiting Fellowship for Dr. C.V. Tomy

低温下多铁晶体特性的研究：C.V. 博士的访问学者

• 批准号: EP/F040512/1
• 负责人: Geetha Balakrishnan
• 金额: $ 11.07万
• 依托单位: University of Warwick
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF040512%2F1
• 关键词: Investigation; properties; multiferroic; crystals; low

Multiferroics are materials that exhibit both ferromagnetic order as well as ferroelectric order and more intriguingly, a coupling between these two ordered states: the ferromagnetic order can be controlled by an electric field and the ferroelectric order can be controlled by a magnetic field. Research into multiferroics is an emerging and exciting area not just for the new and rich physics that it has thrown up, but also for the potential these materials hold for practical device applications. The Superconductivity and Magnetism group at Warwick is currently working in collaboration with Prof Thomas group in the Department of Physics for research into multiferroics. The multiferroics we wish to investigate (Manganites, low dimensional and frustrated magnets) exhibit both magnetic and ferroelectric ordering at low (Liquid Helium) temperatures. This proposal addresses the need for a low temperature experimental arrangement at Warwick to investigate the dielectric and ferroelectric properties of several multiferroic crystals in order to be able to fully understand the coupling between the magnetic ordering and their ferroelectric properties they exhibit at low temperatures. The proposal requests funds to accommodate the visit of Dr. C.V. Tomy from the I.I.T., Bombay, India, as a Visiting Researcher to Warwick for a period of 12 months. Dr. Tomy is an extremely experienced low temperature physicist whose expertise is ideal for the proposed project. In this 12 month period, we propose to establish a working experimental facility for the investigation of the properties of multiferroics at Warwick as well as to study the multiferroic properties of several new multiferroics.

多铁性是既表现出铁磁有序又表现出铁电有序的材料，更有趣的是，这两种有序状态之间的耦合：铁磁有序可以由电场控制，铁电有序可以由磁场控制。对多铁性的研究是一个新兴而令人兴奋的领域，不仅是因为它带来了新的丰富的物理学，也是因为这些材料在实际设备应用中具有的潜力。华威大学的超导和磁性小组目前正在与物理系的托马斯教授小组合作，研究多铁性。我们要研究的多铁性材料(锰氧化物、低维磁体和受挫磁体)在低(液氦)温度下表现出磁性和铁电有序。这项建议解决了在沃里克的低温实验装置的需要，以研究几个多铁性晶体的介电和铁电性质，以便能够完全理解在低温下它们表现出的磁有序和它们的铁电性质之间的耦合。该提案要求为印度孟买理工学院的C.V.Tomy博士作为访问研究员访问华威提供资金，访问期限为12个月。Tomy博士是一位非常有经验的低温物理学家，他的专业知识非常适合这个拟议的项目。在这12个月的时间里，我们建议在沃里克建立一个用于研究多铁性的工作实验装置，以及研究几种新的多铁性的多铁性。