RADLAB Seminar

High-performance Micromagnetics for Magnetic Nanostructured Materials and Devices

Vitaliy LomakinUniversity of California, San Diego

Magnetic materials and devices are an inherent part of a host of physical and engineering systems. Micromagnetic and electromagnetic simulations have a significant predictive power and are important for our ability to analyze and design such systems. We present our recent work on the development of high-performance micromagnetic and electromagnetic simulators as well as their use for applications in magnetic material and device analysis and design. In particular, we demonstrate a high-performance fast magnetic simulator (FastMag) framework, which solves Landau-Lifshitz-Gilbert type equations for simulating non-linear magnetization dynamics in ultra-complex magnetic materials and devices. We also show coupled electromagnetic-micromagnetic simulators, which allow accurately accounting for non-linear dynamic phenomena including Eddy currents. The performance of these simulators is based on efficient methods for computing effective magnetic fields, efficient methods for non-linear time integrations, and massive parallelization on Graphics Processing Unit (GPU) computing systems. Examples of using the developed simulators for applications in magnetic recording, magnetic memories, magnetic processing, and microwave magnetic materials are presented.
Prof. Vitaliy Lomakin received his M.S. in Electrical Engineering from Kharkov National University in 1996 and Ph.D. in Electrical Engineering from Tel Aviv University in 2003. From 2002 to 2005 he was a Postdoctoral Associate and Visiting Assistant Professor in the Department of Electrical and Computer Engineering, University of Illinois at Urbana Champaign. He joined the Department of Electrical and Computer Engineering at the University of California, San Diego in 2005, where he currently holds the position of Associate Professor and serves as an Associate Director of the Center for Magnetic Recording Research. His research interests include Computational Micromagnetics/Nanomagnetics, Computational Electromagnetics, the micromagnetic analysis and design of magnetic nanostructures and devices, and the electromagnetic analysis and design of photonic and microwave structures.

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