In this seminar, I will present our work on manipulating magnetization with acoustic waves. The temporally and spatially varying strain in acoustic waves produces a corresponding change in the local anisotropy of magnetostrictive materials through the Villari effect. This magneto-acoustic coupling may be used for patterning magnetic films and for nonlinear signal processing such as amplification and correlation of spin waves. I will discuss our experiments and results towards these application possibilities, and also present the techniques we have developed to characterize magnetostriction.
Pallavi Dhagat is a full professor in the School of Electrical Engineering and Computer Science at Oregon State University, USA. Pallavi obtained her doctoral degree from Washington University in St. Louis and then joined Seagate Technology in Minneapolis, where she was involved in the development of perpendicular recording technology. Since 2005, she has been a faculty member at Oregon State University. She has established a research program in applied magnetism with a focus on the development of new applications and measurement techniques for magnetic materials and devices. She is the President of the IEEE Magnetics Society, and has served as the General Chair of the Conference on Magnetism and Magnetic Materials (MMM) in 2017.