Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Magnetoresistance effect film and magnetoresistance effect type head
 In a spin valve type magnetoresistance effect film, an antiferromagnetic layer is made of M.sub.x Mn.sub.100-x wherein M represents at least one selected from Ru, Rh, Re, Pt, Pd, Au, Ag, Fe, Ni, Ir and Cr, and 15.ltoreq.x.ltoreq.58 (unit of x: atomic %), and a protective layer formed thereon is made of at least one selected from Rh, Ru, Zr and Ti. With this arrangement, a magnetoresistance effect film highly excellent in thermal stability and small in deterioration of the MR ratio, as well as a magnetoresistance effect type head having such a magnetoresistance effect film can be obtained. 
TDK Corporation
G
G11B
inventional
Yoshihiro Masashi Satoru
Tsuchiya Sano Araki