Magnetic recording medium

Abstract

A main object is to provide a magnetic recording medium having a high recording density to be capable of preventing an increase in frictional force even in a case where many times of traveling is performed. Furthermore, in addition to the prevention of an increase in frictional force, a further object of the present technology is maintenance of the polishing force at the time of many times of traveling. The present technology provides a magnetic recording medium including a magnetic layer containing a magnetic powder, the magnetic layer containing first particles having conductivity and second particles having a Mohs hardness of 7 or more, the first particles and the second particles forming protrusions on a surface on a side of the magnetic layer, the second particles forming protrusions having an average height (H2) of 7 nm or less on the surface on the side of the magnetic layer, the magnetic recording medium containing a fatty acid, the magnetic recording medium having an extraction rate of the fatty acid of 45% or more, the extraction rate defined by a formula described below. Extraction rate of fatty acid (%)=[amount of fatty acid extracted in 5 minutes (mg/m2)/total amount of fatty acid extracted (mg/m2)]×100

Dependencies are inferred from the claim text.