Title :
The study of non-shield head for perpendicular recording
Author :
Takagishi, M. ; Yoshikawa, M. ; Tateyama, K. ; Sahashi, M.
Author_Institution :
Corp. Res. Dev. Center, Toshiba Corp., Kawasaki, Japan
Abstract :
Summary form only given. With the current shield type head applied to higher areal density recording, the gap length (shield to shield separation) decreases. We estimated the gap length necessary for higher areal densities and it became less than 20 nm for 400-500 Gbpsi. Thus it will be difficult to use current GMR or TMR elements. However J.G. Zhu (2001) proposed a GMR design without an anti-ferromagnetic layer, while we investigate another way, i.e. a non-shield head or yoke structure for perpendicular recording with ultra-high areal density.
Keywords :
digital magnetic recording; giant magnetoresistance; magnetic heads; magnetoresistive devices; perpendicular magnetic recording; 20 nm; GMR head; gap length; high density perpendicular recording; nonshield head; ultra-high areal density; yoke structure; Coercive force; Demagnetization; Magnetic heads; Magnetization; Perpendicular magnetic recording; Shape;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1001164
