Efficient techniques for the computer simulation of magnetic recording in complex layered materials
| Autor: | Dennis M. Newns, Manfred Ernst Schabes, Wilm E. Donath, Glenn J. Martyna, B. Lengsfield |
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| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Journal of Applied Physics. 95:3175-3201 |
| ISSN: | 1089-7550 0021-8979 |
| Popis: | Recent advances in magnetic recording technology are increasing the relevance of simulation to magnetic media design. In particular, the difficulties inherent in developing perpendicular recording technology require the write process to be modeled at an integrated level via the simulation of a nanoscale machine consisting of the media, the soft underlayer, and the moving head. These simulations need to be very efficient in order to permit extensive testing of both materials and drive specification. Thus, significant methodological improvements that increase the accuracy and speed of the micromagnetic modeling are required. In this article, a method for calculating the magnetic fields in a complex layered material with grained morphologies whose computational cost scales linearly with system size is presented. The speed, accuracy, and parallel efficiency of the method is demonstrated on both supercomputers and PC clusters using our Almaden-Yorktown micromagnetic simulator (AYM). The method and AYM software... |
| Databáze: | OpenAIRE |
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