Micromagnetic recording field analysis of fast-switching single-pole-type heads for bit-patterned media

Y. Kanai, M. Saiki, K. Hirasawa, T. Tsukamoto, K. Yoshida, S. J. Greaves, H. Muraoka

研究成果: Article

8 引用 (Scopus)

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A Landau-Lifshitz-Gilbert (LLG) micromagnetic analysis of the recording field of single-pole-type (SPT) heads was carried out. The whole volume comprising the SPT head and the double-layered medium was treated micromagnetically using the finite-difference method with cubic cells as small as 5 nm, giving a total number of cells of more than 10.8 million. A parallelized fast Fourier transform (FFT) method was used to solve this large-scale problem. Dynamic recording fields were calculated for various head structures and head materials. The timing (synchronization) between the dynamic head field and land location in bit-patterned media (BPM) is discussed and the design methodology is discussed for a fast-switching SPT head.

元の言語English
ページ(範囲)e287-e290
ジャーナルJournal of Magnetism and Magnetic Materials
320
発行部数14
DOI
出版物ステータスPublished - 2008 7 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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