PURPOSE: To obtain a magnetic recording medium which prevents curling and consequent unstable traveling and has excellent durability, etc. by providing a shape memory alloy layer on a non-magnetic substrate provided with one or multiple magnetic recording layers on the non-magnetic substrate or between the magnetic layers.
CONSTITUTION: A shape memory alloy layer 3 of Ti-Ni alloy, etc. is formed by vacuum evaporation to 0.1W10μ thickness between the surface 1a of a non- magnetic substrate 1 consisting of polyethylene terephthalate, polyimide, etc. and a magnetic recording layer 7a. A soft magnetic layer 7a of "Permalloy" is formed by sputtering on the layer 3. A vertical magnetic recording layer 7b is formed by sputtering on the layer 7a. The laminate is taken out into the atm. is sandwiched between thick glass plates and is heat-treated for about 1hr at 220W280°C. The magnetic recording medium suitable for high-density recording is obtd. The alloy layer 3 may be formed on the opposite surface 1b of the substrate 1 or between the magnetic layers 7a and 7b.
YAMAGATA IKUAKI
HASHIMOTO MORIYOSHI
