Korea Institute of Science and Technology

Soon Gwang Kim

Won Mok Kim

Taek Sung Lee

Byung Ki Cheong

Moon Kyo Chung

The present invention is related to a super-resolution composite material for a high density optical information recording medium which consists of a dielectric medium that is transparent at a laser wavelength in use and has a melting point higher than 800&deg; C., and metal particles that are dispersed in the dielectric medium and have low melting points of 150&tilde;450&deg; C. Super-resolution capability of the material is rendered by metal particles that undergo reversible phase changes between melt and crystalline states, accompanied by changes in optical properties. As the dielectric medium, at least one material is selected for use from the group of SiO , TiO , ZrO , HfO , Al O , ZnO, Y O , BeO, MgO, WO , V O , SiN, AlN, ZnS, CdS SiC, MgF, CaF , NaF, BaF , PbF , LiF, LaF , GaP. As the metal particles with low melting points and high boiling points, at least one material is selected for use from a group of Sn, Pb, Bi, Te, Zn Cd, Se, Tl and Po.

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Koyang, South Korea

Soon Gwang Kim