摘要:
A light-amplifying glass which comprises: a matrix glass comprising 20 to 80 mol% Bi2O3, 5 to 75 mol% B2O3 + SiO2, 0.1 to 35 mol% Ga2O3 + WO3 + TeO2, up to 10 mol% Al2O3, up to 30 mol% GeO2, up to 30 mol% TiO2, and up to 30 mol% SnO2 and containing no CeO2; and 0.01 to 10 wt.% erbium added to the matrix glass.
摘要:
The present invention relates to a method for producing an oxide containing a conductive mayenite type compound and having an electron concentration of 1x10 18 /cm 3 or more, from a raw material which is a combination of a calcium compound and an aluminum compound or is a compound containing calcium and aluminum, each having a molar ratio of calcium oxide and aluminum oxide ranging from 9:10 to 14:5 in terms of the oxides, the method including the steps of: heating and holding the raw material at 900 to 1,300°C to produce a calcined powder containing at least one oxide selected from the group consisting of a calcium aluminate, calcium oxide and aluminum oxide; and heating and holding the calcined powder at 1,200°C to less than 1,415°C under a reduction atmosphere in an inert gas atmosphere or a vacuum atmosphere each having an oxygen partial pressure of 1,000 Pa or less.
摘要:
A C12A7 electride thin film fabrication method includes a step of forming an amorphous C12A7 electride thin film on a substrate by vapor deposition under a low-oxygen-partial-pressure atmosphere using a target made of a crystalline C12A7 electride having an electron density within a range of 2.0×10 18 cm -3 to 2.3×10 21 cm -3 .