Preparation and piezoelectric properties of potassium sodium niobate glass ceramics
Jiang Shana), Wang Xuan-Mingb), Li Jia-Yuc), Zhang Yonga), Zheng Taoa), Lv Jing-Wena)†
       
Variations of transmittance with the wavelength of KNN glass ceramics heat-treated for (curve a ) 0, (curve b ) 2, (curve c ) 4, (curve d ) 6, or (curve e ) 8 h.