S. A. Sadykov, A. Sh. Agalarov, S. N. Kallaev, S. M. Alieva, K. Bormanis, “Electroluminescence of (Pb$_{0.91}$La$_{0.09}$)(Zr$_{0.65}$Ti$_{0.35}$)O$_3$ ceramics with nanopolar structure”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2012, Volume 38, Issue 3,Pages 17

Electroluminescence of (Pb$_{0.91}$La$_{0.09}$)(Zr$_{0.65}$Ti$_{0.35}$)O$_3$ ceramics with nanopolar structure

S. A. Sadykov^ab, A. Sh. Agalarov^ab, S. N. Kallaev^ab, S. M. Alieva^ab, K. Bormanis^c

^a Daghestan State University, Makhachkala
^b Daghestan Institute of Physics after Amirkhanov
^c Institute of Solid State Physics, Latvian University

Abstract: Lanthanum-doped lead zirconate titanate (PLZT) relaxor ceramics with (Pb$_{0.91}$La$_{0.09}$)(Zr$_{0.65}$Ti$_{0.35}$)O$_3$ composition exhibits a repolarization-induced 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 temporal and temperature dependences of the EL intensity have been studied.

Received: 28.07.2011