Aluminum Oxide Material for Optical Data Storage

Patent Number: CA2469199A1
Inventor: Mark Akselrod
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Abstract
The present invention provides aluminum oxide crystalline materials including dopants and oxygen vacancy defects and methods of making such crystalline materials. The crystalline materials of the present invention have particular utility in optical data storage applications.
Current Assignee:  Landauer Inc.
Full Patent: Aluminum Oxide Optical Storage CA2469199A1
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First Five Claims
1. A crystalline material comprising:
a base material comprising Al2O3;
a first dopant comprising magnesium; and
a second dopant comprising carbon, wherein said crystalline material includes a plurality of at least one type of oxygen vacancy defect.
Tip: CDP can likely produce this material by detonating dry ice + aluminum + very little magnesium
2. The crystalline material of claim 1, wherein Mg is present in said crystalline material in a quantity of between 1 and 100 ppm of said base material by weight.
Tip:  CDP can vary small magnesium concentrations to explore this patent’s entire list of alleged optical storage candidates
3. The crystalline material of claim 1, wherein Mg is present in said crystalline material in a quantity of between 10 and 40 ppm of said base material by weight.
Tip:  I think that also including boron can improve this invention
4. The crystalline material of claim 1, wherein said Mg is present in said crystalline material in a quantity of about 27 ppm of said base material by weight.
Tip: Since there is a claim stating ” between X and Y ppm” it is unnecessary to specify a figure from that range
5. The crystalline material of claim 1, wherein said C is present in said crystalline material in a quantity of between 0.5 and 20 ppm of said base material by weight.
Tip: Carbon… in what phase? Would multiple phases be ok? I think that specifying the carbonaceous phase is very important