| 摘要 |
PROBLEM TO BE SOLVED: To improve S/N ratio and to enable high speed reproduction by joining an electrode layer consisting of a specific metal and a substrate through a junction layer of a metal, forming an electrode substrate in which unevenness of a surface of a metal electrode layer is the prescribed value or less and which has the prescribed flat area or more, and forming a recording medium having a same flat surface on a metal electrode layer. SOLUTION: A thin film of a metal electrode layer 102 consisting of the precious metals such as Pt, Au and the like is formed on a first substrate 101 such as a float glass material and the like of which surface unevenness is 1 nm or less and which has an area of 1μm square or more. Next, a metal junction layer such as Au and the like is formed on a metal layer 104 consisting of Ti and the like on a second substrate 103, after metal layer surfaces of the substrates 101 and 103 are pressed, the substrate 101 is peeled off and an electrode substrate 106 is formed, and the prescribed recording layer 107 is formed by a LB method. Thereby, superimposition of signal component frequency by unevenness of a recording layer and data signal band frequency is prevented, the S/N ratio is improved, a gap of a recording layer and a probe is kept constant, and high speed driving of the probe can be performed.
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