Title :
Thermal effects in shielded MR heads for tape applications
Author :
Dee, R.H. ; Thornley, R.F.M.
Author_Institution :
Storage Technol. Corp., Louisville, CO, USA
fDate :
11/1/1991 12:00:00 AM
Abstract :
The authors discuss some factors that limit the permissible input power in multi-track magnetoresistive (MR) tape heads. The possible consequences of increasing the power dissipation in MR heads as a means of increasing readback signal amplitude are discussed. A simple model to describe the temperature rise of a shielded MR element is given. Evidence for exceeding the Curie point of ferrite used in shielded MR heads is seen with element temperatures in excess of 340°C recorded prior to element burnout
Keywords :
ferrite devices; magnetic heads; magnetic recording; magnetic tapes; magnetoresistance; nickel compounds; zinc compounds; Curie point; Ni1-xZnxFe2O4; NiZn ferrite; element burnout; element temperatures; multitrack magnetoresistive tape heads; readback signal amplitude; shielded MR heads; thermal effects; Ferrites; Magnetic films; Magnetic flux; Magnetic heads; Magnetic noise; Magnetic shielding; Noise reduction; Power dissipation; Temperature; Thermal stresses;
Journal_Title :
Magnetics, IEEE Transactions on
