博士后Patan Yousaf Khan为第一作者的论文“Magnetostriction enhancement in ferromagnetic strain glass by approaching the crossover of martensite”于2020年2月2日被Applied Physics Letters录用。祝贺Khan博士！

论文摘要：Owing to the unique nanostructure with nanosized strain domains embedded in the austenite matrix, the ferromagnetic strain glass has recently been found to yield low-field large magnetostriction, providing an important principle to design magnetostrictive materials. Considering that the magnetostriction maximizes in the vicinity of strain glass transition temperature, Tg that is usually below room temperature, it is inspiring to search for a feasible approach to further enhance the room temperature magnetostriction from an application point of view. Here, we report that approaching the crossover of martensite through applying proper stress during annealing can effectively enhance the room temperature magnetostriction of a random polycrystalline Fe67.7Pd32.3 strain glass alloy with Tg of 133 K from 73 to 95 ppm by

~30%. The comparative results reveal that annealing with higher stress, e.g. 15 MPa, will deteriorate the magnetostriction performance due to the stress-induced martensites. Further transmission electron microscope study reveals that the enhanced magnetostriction is due to slightly enlarged strain nanodomains because the proper bias stress provides extra driving force towards the martensite and helps to overcome the kinetic limitation, which may be an universal approach to achieve large magnetostriction in ferromagnetic strain glass.