Title :
α-Fe2O3 spin-valve using Co/Ru/Co synthetic antiferromagnet
Author :
Sugita, Yasunari ; Kawawake, Yasuhiro ; Satomi, Mitsuo ; Sakakima, Hiroshi
Author_Institution :
Central Res. Labs., Matsushita Electr. Ind. Co. Ltd., Kyoto, Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
This paper reports the enlargement of pinning field, Hp, in spin-valves with α-Fe2O3 as a pinning layer utilizing a Co/Ru/Co synthetic antiferromagnet as the pinned layer. Hp of α-Fe2O3/Co is only 18 kA/m with a 20-nm-thick α-Fe2O3 layer. On the other hand, Hp is improved over 40 kA/m by replacing the pinned layer with Co/Ru/Co synthetic antiferromagnet. We studied the dependence of Hp in α-Fe2O3 spin-valves with the Co/Ru/Co on Ru and α-Fe2O 3 layer thickness
Keywords :
antiferromagnetic materials; cobalt; flux pinning; iron compounds; ruthenium; spin valves; α-Fe2O3 pinning layer; 20 nm; Co/Ru/Co synthetic antiferromagnet pinned layer; Fe2O3-Co-Ru-Co; layer thickness dependence; pinning field; spin-valves; Antiferromagnetic materials; Couplings; Giant magnetoresistance; Magnetic fields; Magnetic heads; Magnetic materials; Saturation magnetization; Sputtering; Temperature; Valves;
Journal_Title :
Magnetics, IEEE Transactions on
