The Influence of Fabrication Conditions on the Physical Properties of PLZT:Nd3+ Ceramics

Abstract

3+The aim of this work was to study the effect of fabrication conditions and neodymium co-doping on the physical properties of (Pb 0.98 La 0.02 )(Zr 0.65 Ti 0.35 ) 0.98 O 3 , known as PLZT:Nd 3+ ceramics. All ceramic powders of these materials were synthesized by the conventional mixed oxide method, from the high purity raw materials (>99.9%). The bulk ceramic samples were sintered by the pressure less sintering and the hot-uniaxial pressing techniques.The study gives a detailed account of the relationships between doping and preparing conditions on the dielectric and optical properties of obtained ceramic materials. Optimal conditions of PLZT:Nd 3+ preparation as well as Nd 3+ activator concentration were determined in relation to the potential opto-electronic applications.Keywords: PLZT, ferroelectric ceramics, luminescence, Nd 3+ co-doping Celem niniejszej pracy było zbadanie wpływu warunków wytwarzania i zastosowanej domieszki neodymu na właściwości fizyczne ceramiki (Pb 0.98 La 0.02 )(Zr 0.65 Ti 0.35 ) 0.98 O 3 , określanej mianem PLZT:Nd 3+ . Wszystkie proszki przygotowanych składów syntetyzowano metodą konwencjonalną, z tlenków o wysokiej czystości (>99.9%). Próbki ceramiczne zagęszczano techniką swobodnego spiekania i jednoosiowego prasowania na gorąco. Wykonane badania dały szczegółowy opis zależności między stosowaną domieszką oraz przyjętymi warunkami wytwarzania oraz wpływu na dielektryczne i optyczne właściwości otrzymanych materiałów ceramicznych. Optymalne warunki przygotowania PLZT:Nd 3+ , jak również zastosowane stężenia aktywatora Nd 3+ zostały określone w odniesieniu do potencjalnych zastosowań optoelektronicznych.

Characterization of Lead Lanthanum Zirconate Titanate Ceramics Co-Doped with Lanthanide Ions

“…In case of PLZT:Pr 3+ and PLZT:Nd 3+ the grains growing to 2 m and 3 m, were observed. The optical property of the rare earth ions in several host matrices, such as glass and ceramics, depends on their chemical composition as well as on their fabrication conditions [6]. For the all prepared samples the luminescent spectra were measured, to show how admixture of Pr 3+ and Nd 3+ dopants can influence the luminescent properties of 8/65/35 PLZT ceramics (Figure 3).…”

Investigation of Praseodymium Ions Dopant on 9/65/35 PLZT Ceramics’ Behaviors, Prepared by the Gel-Combustion Route

“…There is a gradual departure from the conventional solid-state reaction between the constituent oxides. A high-temperature process (~950 • C during synthesis to ~1250 • C into sintering), carried out for a prolonged time, is necessary to gain the pure phase, resulting in significant grain growth [40,42]. In this process, extensive milling of the powders can lead to their possible contamination, inhomogeneous or non-stoichiometry.…”

Fe-Doped Barium Lanthanum Titanate as a Competitor to Other Lead-Free Piezoelectric Ceramics

“…Smaller cations usually occupy the B positions, e.g., Fe 3+ , Ti 4+ , Zr 4+ , Ta 5+ , Nb 5+ , W 6+ [ 4 , 5 , 6 ], characterized by a suitable size and oxidation [ 7 , 8 ]. The simultaneous substitution of admixtures in the A and B ion positions, in ABO 3 -type perovskites, is associated with obtaining original perovskite materials with complex electrical properties; examples include the compounds of (1−x)BiFeO 3 -xBaTiO 3 [ 9 ], (1−x)PbZrO 3 -xPbTiO 3 [ 10 ], (Pb (1−x) La x )(Zr y Ti (1−y) ) (1−0.25x) O 3 [ 11 ], (Pb (1−x) Ba x )(Zr (1−y) Ti y )O 3 [ 12 ], (Ba (1−x) Sr x )(Zr (1−y) Ti y )O 3 [ 13 ], and Pb(Fe 0.5 Nb 0.5 )O 3 [ 14 ].…”