ELECTRIC FIELD WRITE-TYPE MAGNETIC RECORDING DEVICE
|Posted date||Jun 5, 2013|
|International application number||2012JP078196|
|International publication number||WO 2013/073371|
|Date of international filing||Oct 31, 2012|
|Date of international publication||May 23, 2013|
|Title||ELECTRIC FIELD WRITE-TYPE MAGNETIC RECORDING DEVICE|
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.
|IPC(International Patent Classification)|
Contact Information for " ELECTRIC FIELD WRITE-TYPE MAGNETIC RECORDING DEVICE "
- National University Corporation Akita university Cooperative Research Center Division of Intellectual Property
- URL: https://www.akita-u.ac.jp/honbu/social/
- Address: 1-1, Tegata-Gakuen-Machi, Akita-shi, Akita, Japan , 010-8502
- Fax: 81-18-837-5356