Title :
Stability of dual synthetic spin valve devices
Author :
Yan, X. ; Rao, D. ; Gibbons, M.R. ; Qian, C. ; Tong, H.C.
Author_Institution :
Read-Rite Corp., Fremont, CA, USA
fDate :
9/1/1999 12:00:00 AM
Abstract :
Magnetic field sensitivity of IrMn-based synthetically pinned dual spin valve structures was studied using quasi-static testing (QST). The dual synthetic spin valve structure was demonstrated to have inherent advantages in terms of high sensitivity to magnetic field and robust low asymmetry against changing bias current and elevated temperatures. In addition, the diamond like carbon coated devices demonstrate that there are no measurable changes in either resistance or QST amplitude after 3 days annealing at 120°C
Keywords :
giant magnetoresistance; iridium alloys; magnetic heads; magnetic multilayers; manganese alloys; spin valves; thermal stability; 120 C; DLC coated devices; IrMn; IrMn-based synthetically pinned; changing bias current; dual synthetic spin valve devices; elevated temperatures; giant magnetoresistive heads; magnetic field sensitivity; magnetic recording heads; quasi-static testing; robust low asymmetry; thermal stability; Annealing; Diamond-like carbon; Electrical resistance measurement; Magnetic field measurement; Magnetic fields; Robustness; Spin valves; Stability; Temperature sensors; Testing;
Journal_Title :
Magnetics, IEEE Transactions on
