Title:
DEMAGNETIZING METHOD AND DEMAGNETIZER PERFORMING THE SAME
Document Type and Number:
Japanese Patent JP2007281242
Kind Code:
A
Abstract:
To provide a demagnetizing method for inexpensively and easily performing demagnetization at high speed with a high demagnetization rate, and also to provide a demagnetizer performing the method.
A testpiece is magnetized in a regular magnetic field, and the testpiece is pulled out from the magnetic field so that it keeps away from the field while it is rotated. The testpiece is rotated while a magnetic pole is reversed. Magnetic field amplitude is attenuated to zero and demagnetization is performed.
COPYRIGHT: (C)2008,JPO&INPIT
Inventors:
KATO SEIICHI
KIDO YOSHIO
KIDO YOSHIO
Application Number:
JP2006106300A
Publication Date:
October 25, 2007
Filing Date:
April 07, 2006
Export Citation:
Assignee:
NAT INST FOR MATERIALS SCIENCE
International Classes:
H01F13/00
Domestic Patent References:
| JPS5726415A | 1982-02-12 | |||
| JPS5883109A | 1983-05-18 | |||
| JPH0897035A | 1996-04-12 |