Title :
Permalloy/Sendust metal-in-gap head
Author :
Sillen, C. W M P ; Ruigrok, J.J.M. ; Van Groenou, A.Broese ; Enz, U.
Author_Institution :
Philips Res. Labs., Eindhoven, Netherlands
fDate :
3/1/1988 12:00:00 AM
Abstract :
By first depositing a thin films of Permalloy on a recording head no pseudogaps occur. At the gap the relative wear is slight, due to the presence of the Sendust. The gap cladding has minimal residual stress to avoid a decrease of head efficiency due to induced stress in the ferrite. The SiO2/Mo/Au gap is prepared by low-temperature thermodiffusion. This results in a magnetically sharp gap with a reproducible length. With this Permalloy/Sendust metal-in-gap head, a high-density recording head for in-contact recording has been realized.
Keywords :
Permalloy; aluminium alloys; ferrites; ferromagnetic properties of substances; iron alloys; magnetic heads; silicon alloys; NiFe-FeSiAl; SiO2-Mo-Au; ferrite; high-density recording head; in-contact recording; low-temperature thermodiffusion; metal-in-gap head; thin films; Coercive force; Ferrites; Gold; Laboratories; Magnetic heads; Magnetic recording; Residual stresses; Soft magnetic materials; Thermal stresses; Video recording;
Journal_Title :
Magnetics, IEEE Transactions on
