Patent ID: 7060371

Claim:
A mechanoluminescence material, comprising: a mother body material; and a luminescence center added to the mother body material, wherein: said mother body material is constituted of at least one kind of oxide selected from: aluminate having a structure indicated by a general formula (B) xM 2 O.yAl 2 O 3 (M 2 in the formula is Ca or Ba, and a part thereof may be replaced with either Mg or La, and each of x and y is 1 or more); silicate having a structure indicated by a general formula (C) Ba 2 MgSiO 7 ; tantalite or niobate having a structure indicated by a general formula (D) xM 4 O.yM 5 4 O 10 (M 4 in the formula is Ca, Ba or Sr, and M 5 is replaced with at least one kind selected from Ta and Nb, and each of x and y is 1 or more); and gallium oxide having a structure indicated by a general formula (E) xM 6 O.yGa 2 O 3 (M 6 in the formula is Ca, Ba or Sr, and a part thereof may be replaced with La, and each of x and y is 1 or more); and said luminescence center is at least one kind selected from (i) a rare earth metal of at least one kind selected from Sc, Y, La, Pr, Nd, Pm, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and (ii) a transition metal of at least one kind selected from Ti, Zr, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Nb, Mo, Ta, and W.