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ELECTRIC FIELD WRITE-TYPE MAGNETIC RECORDING DEVICE meetings

Foreign code F130007380
File No. S2012-0166-N0
Posted date Jun 5, 2013
Country WIPO
International application number 2012JP078196
International publication number WO 2013/073371
Date of international filing Oct 31, 2012
Date of international publication May 23, 2013
Priority data
  • P2011-253356 (Nov 18, 2011) JP
Title ELECTRIC FIELD WRITE-TYPE MAGNETIC RECORDING DEVICE meetings
Abstract

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.

  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • AKITA UNIVERSITY
  • Inventor
  • YOSHIMURA SATORU,
  • SAITO HITOSHI
IPC(International Patent Classification)
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