to be significant in magnetic coercive force and be hardly variable in magnetization direction thereof turning now to fig4 there is depicted a multilayer structure of the magnetic record medium 4 used in this embodiment a substrate 20 is made of soda lime glass that is chemically reinforced the glass substrate 20 has its top surface on which a first underlayer 21 and second underlayer 22 plus magnetic layer 23 as well as protective layer 24 are laminated in this order the first underlayer 21 is made of ni 35 at ta having its film thickness of 50 nm the second underlayer 22 is a cr 15 at ti film of 10 nm thick magnetic layer 23 is a 22 nm thick co 20 at cr 10 at pt alloy film the protective later 24 is a 10 nm carbon film regarding a certain medium for use in evaluation of read write characteristics a lubrication layer with absorbability was additionally provided which is made of perfluoroalkylpolyester or any equivalents thereto and has its thickness of from 2 to 20 nm the medium may be manufactured in a way which follows firstly prepare an alkali washed substrate the substrate is heated by lamp heaters up to a temperature of 300 u00b0 c after having formed thereon a first underlayer the resultant structure is again heated to 200 u00b0 c then sequentially fabricate thereon a second underlayer magnetic layer and protective layer film formation for the multilayer lamination of from the first underlayer to protective layer was continuously performed in a vacuum all the films were fabricated by dc sputtering techniques in an ar gas atmosphere at 10 mtorr to evaluate the structure of the first underlayer a ni 35 at ta alloy alone was first.