Invention Grant
- Patent Title: Electromagnetic field generating element, information recording and reproduction head, and information recording and reproduction device
- Patent Title (中): 电磁场产生元件,信息记录和再现头,以及信息记录和再现装置
-
Application No.: US12322112Application Date: 2009-01-29
-
Publication No.: US08064297B2Publication Date: 2011-11-22
- Inventor: Junichi Sato , Yoshiteru Murakami , Hideki Eto
- Applicant: Junichi Sato , Yoshiteru Murakami , Hideki Eto
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Edwards Wildman Palmer LLP
- Agent George W. Neuner
- Priority: JP2008-019741 20080130; JP2008-242582 20080922
- Main IPC: G11B11/00
- IPC: G11B11/00

Abstract:
An electromagnetic field generating element includes a conductor that generates near-field light when irradiated with light and generates a magnetic field when a current flows through the conductor. The electromagnetic field generating element further includes a soft magnetic body provided at a position along a dimension of the conductor, the dimension being perpendicular to (i) a direction in which the conductor faces a magnetic recording medium to which the near-field light and the magnetic field are applied and to (ii) a direction in which the current flows. The present invention thus allows for provision of an electromagnetic field generating element that allows for reduction in its power consumption in optically assisted magnetic read/write using near-field light.
Public/Granted literature
Information query
IPC分类: