Magnetostriction in rare earth -- transition metal alloys

稀土元素的f电子和过渡金属的d电子之间的相互作用产生了非常有用的特性，如硬铁磁性（用于今天的强永磁体）和巨磁致伸缩（用于声学换能器等）。这些材料在其基础材料物理方面也很迷人。伯明翰大学和华威大学正在共同努力，了解稀土过渡金属磁铁的内在特性，从而制定稀土过渡金属磁铁的关键设计原则，由EPSRC资助EP/M029034/1，题为“PretAMag”（“稀土过渡金属永磁体设计原理的物理学研究”）。该博士项目位于伯明翰大学冶金与材料学院，将涉及材料的生长和使用先进的表征技术（同步加速器x射线、中子散射、介子自旋）来详细探测磁致伸缩合金。

The interactions between the f-electrons of rare earth elements and the d-electrons of transition metals give rise to extremely useful properties such as hard ferromagnetism - as used in today's strong permanent magnets - and giant magnetostriction - as used e.g. in acoustic transducers.These materials are also fascinating in terms of their fundamental materials physics. The University of Birmingham and the University of Warwick are working together to understand the intrinsic properties and so devise key design principles of the rare-earth transition-metal magnets, supported by the EPSRC grant EP/M029034/1 entitled 'PretAMag' ("Investigations of the Physics underlying the principles of design of Rare Earth Transition metAl permanent MAGnets").This PhD project, based in the School of Metallurgy and Materials at the University of Birmingham, will involve the growth of materials and use advanced characterisation techniques (synchrotron X-rays, neutron scattering, muon spin rotation) to probe magnetostrictive alloys in detail.