Title :
Possibilities of Fe-Pt media for ultra-high density perpendicular magnetic recording
Author :
Suzuki, T. ; Ouchi, K.
Author_Institution :
Akita Res. Inst. of Adv. Technol., Japan
Abstract :
Perpendicular recording is fundamentally characterized by demagnetizing field free transitions. This principal feature is a great advantage not only for granular type media but also laterally exchange-coupled (LEC) film media with enhanced wall-pinning effects. Recently, it has been first reported that larger M/sub s/ and K/sub u/, high density pinning sites, and thinner recording layer of LEC film media are effective for coexistence of a larger hysteresis loop slope parameter, /spl alpha/, and a smaller domain size. Thus, higher recording and reproducing resolutions and lower media noise are expected to be realized by the media. Since an ordered Fe-Pt alloy of L1/sub 0/ phase satisfies the requirements for the LEC film media, we discuss the potential of thinner Fe-Pt film media for perpendicular magnetic recording.
Keywords :
iron alloys; magnetic domains; magnetic hysteresis; magnetic multilayers; magnetic recording noise; magnetic thin films; magnetic transitions; perpendicular magnetic recording; platinum alloys; Fe-Pt alloy phase; Fe-Pt ultra-high density perpendicular magnetic recording media; FePt; LEC media enhanced wall-pinning effects; demagnetizing field free transitions; domain size; granular media; high density pinning sites; hysteresis loop slope parameter; laterally exchange-coupled film media; media noise; recording layer thickness; recording/reproducing resolutions; Collaborative work; Crystal microstructure; Demagnetization; Electrons; Magnetic films; Magnetic hysteresis; Magnetic noise; Perpendicular magnetic recording; Thermal stability; Tin;
Conference_Titel :
Joint NAPMRC 2003. Digest of Technical Papers [Perpendicular Magnetic Recording Conference]
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-7746-X
DOI :
10.1109/NAPMRC.2003.1177054
