DocumentCode :
3531449
Title :
Activation volumes in CoPtCr-SiO2 perpendicular recording media
Author :
Inaba, Y. ; Shimatsu, T. ; Muraoka, Hiroaki ; Dutson, I.D. ; O´Grady, K.
Author_Institution :
Tohoku Univ., Sendai, Japan
fYear :
2005
fDate :
4-8 April 2005
Firstpage :
599
Lastpage :
600
Abstract :
The activation volume (Vact) is the minimum unit of magnetization reversal and the value of the associated diameter (Dact) indicates the potential recording density of media. In this study, we measured Dact for CoPtCr-SiO2 media by two methods: the Sharrock´s equation, and the second is based on the measurement of the fluctuation field from time dependence data determined using a magneto-optical Kerr effect (MOKE). We discuss the values of Dact obtained from the two measurements for CoPtCr-SiO2 media with and without soft under layers (SUL).
Keywords :
Kerr magneto-optical effect; chromium alloys; cobalt alloys; magnetic thin films; magnetisation reversal; perpendicular magnetic recording; platinum alloys; silicon compounds; CoPtCr-SiO2; Sharrock equation; activation volumes; associated diameter; fluctuation field; magnetization reversal; magneto-optical Kerr effect; perpendicular recording media; soft under layers; Equations; Fluctuations; Grain size; Magnetic field measurement; Magnetization; Nonhomogeneous media; Perpendicular magnetic recording; Pulse measurements; Remanence; Time measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
Type :
conf
DOI :
10.1109/INTMAG.2005.1463728
Filename :
1463728
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=3531449
بازگشت