Title :
Effect of secondary gaps in near-saturated metal-in-gap video heads
Author :
Mapps, Desmond J. ; Shute, Hazel A. ; Wilton, David T.
Author_Institution :
Dept. of Commun. & Electron. Eng., Plymouth Univ., UK
fDate :
11/1/2000 12:00:00 AM
Abstract :
Secondary gaps between the ferrite bulk and the Sendust (AlFeSi alloy) shim may occur in metal-in-gap (MIG) heads. Finite-element models are used to explore the effect that these gaps have on the read/write characteristics of single- and double-sided MIG heads. The presence of a secondary gap is shown to cause an additional peak in the writing field and oscillations in the magnitude of the response during replay. The field and response of a double-sided MIG head is affected more than those of the corresponding single-sided MIG head
Keywords :
ferrite devices; finite element analysis; magnetic heads; video recording; AlFeSi; double-sided MIG heads; finite-element models; near-saturated metal-in-gap video heads; read/write characteristics; replay; secondary gap; secondary gaps; single-sided MIG heads; writing field; Coercive force; Ferrites; Finite element methods; Magnetic flux; Magnetic heads; Magnetic materials; Magnetic recording; Manufacturing; Saturation magnetization; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
