Title:
LUMINOUS MATERIAL, ITS PRODUCTION AND LIGHT EMISSION USING THE SAME
Document Type and Number:
Japanese Patent JP3136338
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce a luminous material which is of the kind entirely different from a conventionally known one and is capable of emitting light by deformation caused by a mechanical external force such as a frictional force, shearing force or an impact force.
SOLUTION: This luminous material is produced by adding an oxide of a rare earth metal or a transition metal having an unstable 3d, 4d, 5d or 4f electron shell and capable of causing the radiation transition in the electron shell in an amount of 0.02-0.5 mol.% expressed in terms of metal atoms to an oxide or a compound oxide of at least one metal belonging to the groups 2A, 3A, 4A and 3B of the periodic table, slowly increasing the temperature thereof to 900-1,100°C in an inert atmosphere and then baking the resultant mixture at 1,200-1,500°C in a reducing atmosphere.
Inventors:
Tadahiko Watanabe
Xu super man
Morito Akiyama
Xu super man
Morito Akiyama
Application Number:
JP35216198A
Publication Date:
February 19, 2001
Filing Date:
November 27, 1998
Export Citation:
Assignee:
Director of Industrial Technology
International Classes:
G01L1/00; C09K11/08; C09K11/64; C09K11/68; C09K11/78; (IPC1-7): C09K11/08; C09K11/64; C09K11/68; C09K11/78; G01L1/00
Domestic Patent References:
| JP4846582A | ||||
| JP238484A |
Attorney, Agent or Firm:
220100014 Kyushu Industrial Technology Research Institute Director, AIST