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ELECTRIC FIELD WRITE-TYPE MAGNETIC RECORDING DEVICE 新技術説明会

外国特許コード F130007380
整理番号 S2012-0166-N0
掲載日 2013年6月5日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2012JP078196
国際公開番号 WO 2013/073371
国際出願日 平成24年10月31日(2012.10.31)
国際公開日 平成25年5月23日(2013.5.23)
優先権データ
  • 特願2011-253356 (2011.11.18) JP
発明の名称 (英語) ELECTRIC FIELD WRITE-TYPE MAGNETIC RECORDING DEVICE 新技術説明会
発明の概要(英語)

This electric field write-type magnetic recording device (1) comprises: a rotating disk (11) having a magnetic recording film containing at least one layer of a ferromagnetic ferroelectric substance layer formed on the surface of a base (111)

a write element (121) which has a write electrode (1211) that generates electric flux with the base (111) by having an electric potential with respect to the base, and that writes information (regardless of the magnetic field) to the magnetic recording film (112) by means of an electric field

and a write circuit (13) which, for each information write operation, selects and imparts one of two electric potential levels to the write electrode. The write circuit (13) magnetizes a ferromagnetic ferroelectric substance layer in a specific direction by means of a dielectric flux generated by an electric potential imparted to the write electrode (1211). This electric field write magnetic recording device does not employ a coil in the write head. As a result of this configuration, a dramatic reduction in power consumption is achieved, together with ultra-high-speed writing, ultra-high density recorded information and lower costs.

  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • AKITA UNIVERSITY
  • 発明者(英語)
  • YOSHIMURA SATORU,
  • SAITO HITOSHI
国際特許分類(IPC)
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