Visiting Fellowship - Dr Massimo Ghidini; studies of exchange- and magnetoelectric coupling

Massimo Ghidini博士的访问奖学金申请旨在使剑桥大学材料科学系器件材料组目前正在运行的各种项目受益于Ghidini博士在磁耦合现象建模和表征方面的专业知识。磁性和电磁材料中的许多有趣的问题都与异质结构或纳米复合材料中不同相之间的耦合有关。剑桥和帕尔马都研究过的一个例子（Ghidini博士的家乡大学）是分层薄膜中两个磁相之间的界面交换耦合;在剑桥，我们已经测量了传输特性，磁化强度，试图了解控制耦合的大小和方向的因素，而在帕尔马的工作集中在分析建模和扫描探针成像这样的系统。通过这次为期一年的休假访问，我们希望从Ghidini博士的专业知识中受益，这两个项目目前特别感兴趣-由嵌入反铁磁基质中的铁磁颗粒组成的纳米复合材料的行为，以及铁磁薄膜和电活性基板之间的界面应变耦合。

This application for a visiting fellowship for Dr Massimo Ghidini is aimed at enabling various projects currently running in the Device Materials Group in the Cambridge University Department of Materials Science to benefit from Dr Ghidini's expertise in the modelling and characterisation of magnetic coupling phenomena. Many of the interesting problems in magnetic and electromagnetic materials relate to coupling between different phases in heterostructures or nanocomposites. An example, which has been studied both in Cambridge and in Parma (Dr Ghidini's home University) is the interfacial exchange coupling between two magnetic phases in a layered thin film; in Cambridge we have measured the transport properties, magnetisation to try to understand the factors which control the magnitude and direction of the coupling, whereas work in Parma has concentrated on analytic modelling and scanning probe imaging of such systems. Through this one-year sabbatical visit we hope to benefit from Dr Ghidini's expertise on two projects of particular current interest - the behaviour of nanocomposite materials consisting of ferromagnetic particles embedded in an antiferromagnetic matrix, and the interfacial strain coupling between ferromagnetic films and electrically-active substrates.