NEWLY DEVELOPED INDUCTIVE WRITE HEAD WITH ELECTROPLATED CONIFE FILM

Authors
OHASHI K YASUE Y SAITO M YAMADA K OSAKA T TAKAI M HAYASHI K
Citation
K. Ohashi et al., NEWLY DEVELOPED INDUCTIVE WRITE HEAD WITH ELECTROPLATED CONIFE FILM, IEEE transactions on magnetics, 34(4), 1998, pp. 1462-1464
Citations number
10
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
34
Issue
4
Year of publication
1998
Part
1
Pages
1462 - 1464
Database
ISI
SICI code
0018-9464(1998)34:4<1462:NDIWHW>2.0.ZU;2-U
Abstract
A newly developed CoNiFe film is investigated from the viewpoint of it s application to MR write heads. Film composition is Co65Ni12Fe23, pre pared by electroplating to obtain a b.c.c. plus f.c.c. mixed phase at that composition. Films with mixed phases improve soft magnetic proper ties (B-s is 2.0-2.1 T and the magnetostriction coefficient is +1.8x10 (-6) to +7.4x10(-6)) and also show improved corrosion resistance. Perf ormance of a head with a double layer structure of a 0.3 mu m CoNiFe f ilm and a 4.1 mu m NiFe film is investigated, and a short throat heigh t is found to give better overwrite performance.