Title :
Exchange bias and giant magnetoresistance in spin valves with pico-scale antiferromagnetic layers
Author :
Perdue, K.L. ; Carey, M.J. ; Sparks, P.D. ; Eckert, J.C.
Author_Institution :
Dept. of Phys., Harvey Mudd Coll., Claremont, CA, USA
Abstract :
This work uses the giant magnetoresistance (GMR) of spin valves with pico-scale IrMn layers to determine the exchange biasing effects. The samples were prepared by magnetron sputtering. This paper focuses on the results for the 5 K measurements of the GMR, exchange field and coercive field. The coercive field and exchange field are measured as a function of IrMn thickness and it was found that for IrMn layers ≤12 Å, the coercive field is larger than the exchange field.
Keywords :
antiferromagnetic materials; coercive force; exchange interactions (electron); giant magnetoresistance; iridium alloys; manganese alloys; spin valves; sputter deposition; 5 K; GMR; IrMn; coercive field; exchange bias; giant magnetoresistance; magnetron sputtering; pico-scale antiferromagnetic layers; spin valves; thickness; Antiferromagnetic materials; Electrical resistance measurement; Extraordinary magnetoresistance; Giant magnetoresistance; Magnetic anisotropy; Magnetic field measurement; Microscopy; Perpendicular magnetic anisotropy; Spin valves; Temperature;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464455
