Electroluminescence of (Pb0.91La0.09)(Zr0.65Ti0.35)O3 relaxor ceramics

• Published in: The Journal of physics and chemistry of solids Vol. 74; no. 7; pp. 902 - 904
• Main Authors: Sadykov, S.A., Kallaev, S.N., Agalarov, A.Sh, Alieva, S.M., Bormanis, K.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.07.2013
• Subjects: A. Ceramics; C. Scanning tunnelling microscopy (STM); Ceramics; D. Electrical properties; D. Luminescence; D. Piezoelectricity; Electroluminescence; Nanocomposites; Nanomaterials; Nanostructure; Polar regions; Relaxors; Zirconium titanates; A. Ceramics; D. Piezoelectricity; C. Scanning tunnelling microscopy (STM); D. Luminescence; D. Electrical properties
• ISSN: 0022-3697; 1879-2553
• DOI: 10.1016/j.jpcs.2013.01.028

Lanthanum doped lead zirconate titanate (PLZT) relaxor ceramics with (Pb0.91La0.09)(Zr0.65Ti0.35)O3 composition exhibit a repolarization induced by electroluminescence (EL) with a pronounced discrete character of emission. It is established that this behavior is related to the reorientation of nanodimensional polar regions in a strong pulsed electric field in the vicinity of a smeared phase transition. The time and temperature dependences of the EL intensity are studied. ► In relaxor PLZT ceramics electroluminescence (EL)-induced repolarization was found, which has a discrete character. ► It is shown that this feature of the glow (EL) caused reorientation of polar regions of non-polar matrix. ► Time and temperature dependences of the intensity of electroluminescence are defined.