Spinel-enstatite glass-ceramics

Figure 4-5 Spinel-enstatite glass-ceramic as a magnetic memory disk substrate, in comparison to a canasite disk and a nickel-spinel glass-ceramic.

Pure spinel glass-ceramics show other properties distinct from enstatite-spinel glass-ceramic. These include spinel glass-ceramics and are characterized by GTE of 3.4 X 10 K (0 C-300°C) and transparency in the visible spectrum. They are also suitable for the production of highly pol-ishable disk substrates (Fig. 4-5) (Pinckney 1999). 

All four types of glass-ceramics (spinel-enstatite, spinel, lithium disilicate, and canasite) have been produced by Corning Inc., USA. 

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