Title :
Improved thermal stability of ferromagnetic tunnel junctions with a CoFe/CoFeO/sub x//CoFe pinned layer
Author :
Ochiai, T. ; Tezuka, N. ; Inomata, K. ; Sugimoto, S. ; Saito, Y.
Author_Institution :
Dept. of Mater. Sci., Tohoku Univ., Sendai, Japan
fDate :
March 30 2003-April 3 2003
Abstract :
In this paper, we prepare spin-valve type MTJ with a CoFe/CoFeO/sub x//CoFe pinned layer and the thermal stability of the MTJs was investigated. It was found that MTJ with the pinned layer can bring marked enhancement of TMR effect for a moderate heat treatment up to 400 /spl deg/C.
Keywords :
cobalt alloys; ferromagnetic materials; heat treatment; iron alloys; spin valves; thermal stability; tunnelling magnetoresistance; 400 degC; CoFe-CoFeO/sub x/-CoFe; CoFe/CoFeO/sub x//CoFe pinned layer; TMR effect; ferromagnetic tunnel junctions; heat treatment; spin-valve; thermal stability; Annealing; CMOS process; Magnetic heads; Magnetic sensors; Magnetic tunneling; Nonvolatile memory; Random access memory; Sputtering; Substrates; Thermal stability;
Conference_Titel :
Magnetics Conference, 2003. INTERMAG 2003. IEEE International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7647-1
DOI :
10.1109/INTMAG.2003.1230636
