of the magnetic recording medium shown in fig3 as shown in fig4 a a chromium containing primer layer 25 a is provided on a nonmagnetic support member which comprises a flexible polymer support member 22 and a magnetic layer 26 is formed on the chromium containing primer layer 25 a the magnetic layer 26 comprises a ferromagnetic metal alloy 29 containing at least cobalt platinum and chromium and a nonmagnetic material 30 the ferromagnetic metal alloy 29 and the nonmagnetic material 30 appear to be mixed together however the ferromagnetic metal alloy 29 shown in the figure is a portion where the content of the ferromagnetic metal alloy is relatively higher compared with the entire composition and the nonmagnetic material 30 is a portion where the content of the nonmagnetic material is relatively higher compared with the entire composition the portions where the content of the ferromagnetic metal alloy is higher are positioned with a spacing of 0 01 nm to 10 nm from each other in the present invention it is desirable that crystal growth occurs by reflecting crystal orientation of the chromium containing primer layer 25 a and the magnetic layer 26 is formed in column like structure as shown in fig4 by designing in such structure the portions abundant with the magnetic metal alloy are separated from the portions abundant with the nonmagnetic material in stable manner and high coercive force can be achieved the amount of magnetization is increased in the portions abundant with ferromagnetic metal alloy and this leads to higher output further the portions abundant with the ferromagnetic metal alloy are dispersed evenly and this contributes to the reduction of noise as the material of the chromium containing primer.