Patent ID: 6245394
Filing Date: 2001-06-12
Classification: C23C,H01J

Abstract:
A magnesium oxide film growth method comprising the steps of:guiding a plasma beam generated by a plasma beam generator that uses arc discharge into a hearth placed in a vacuum chamber as an anode;ionizing vaporization material on said hearth;depositing ionized vaporization material on a surface of a substrate placed opposite to the hearth for film formation, wherein said method further comprising of:providing a ring-shaped permanent magnet as an auxiliary anode, said ring-shaped permanent magnet being coaxial with a central axis of said hearth and being positioned so as to surround an upper area of said hearth;supplying, with magnesium (Mg) used as said vaporization material, gas mixed with oxygen into said vacuum chamber to react magnesium particles sublimated from said hearth with oxygen plasma generated by said plasma, the oxygen plasma colliding with a surface of the magnesium vaporization material such that the surface of the magnesium vaporization material is heated by oxidation heat, thereby forming a magnesium oxide (MgO) film on said substrate.