Strong elasticoluminescence from monoclinic-structure SrAl2O4
Abstract
Elastico-deformation luminescence in strontium aluminates was investigated systematically using precisely controlled pure-phase Eu-doped strontium aluminates of SrAl12O19, Sr4Al14O25, SrAl4O7, α-SrAl2O4, β-SrAl2O4, Sr3Al2O6 and their mixed phases. This study revealed that only the α-SrAl2O4 phase produces strong elastico-deformation luminescence; other strontium aluminates show no deformation luminescence. Correlation of deformation luminescence and crystal structure was found. The α-SrAl2O4 has the lowest symmetry, crystallizing in a monoclinic structure. This finding can be applied in designing strong elastico-deformation-luminescent materials.
- Publication:
-
Applied Physics Letters
- Pub Date:
- April 2004
- DOI:
- 10.1063/1.1705716
- Bibcode:
- 2004ApPhL..84.3040X
- Keywords:
-
- 78.60.Mq;
- 61.66.Fn;
- Sonoluminescence triboluminescence;
- Inorganic compounds