The stress emission material of the composition for the manufacture, the stress-luminescent materia

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PROBLEM TO BE SOLVED : To provide a stress light-emitting material with stable quality and high luminance, and to provide an efficient production method of such a stress light-emitting material suited for mass-production.SOLUTION : A production method of a composition for a stress light-emitting material includes : a step (1) to feed water and/or an organic solvent, an alkaline earth metal compound, a rare earth compound, and a compound of a group 13 element into a reaction vessel equipped with a stirred media grinding mill; and a step (2) to obtain a slurry by mix-treating the raw material mixture in the reaction vessel. Also provided are a composition for the stress light-emitting material obtained by the production method, and the stress light-emitting material produced from the composition.