MAGNETIC RECORDING MEDIUM AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a magnetic recording medium which has a magnetic layer of high recording density which consists of magnetic nanoparticles and its protective film and its manufacturing method. SOLUTION: The magnetic recording medium has an affinity material layer 2 formed on a substrate 1, magnetic nanoparticles 3 arranged on the affinity magnetic layer 2 in a shape of a layer, a coupling substance layer 4 formed on the magnetic nanoparticles 3 and an inorganic protective film 5 which is formed on the coupling substance layer 4 by a sol gel process and which consists of a multiphase which includes a metal oxide, a metal hydroxide and organic metal. COPYRIGHT: (C)2005,JPO&NCIPI