Effects of Preparation Conditions on the Structural and Optical Properties of Spark Plasma‐Sintered PLZT (8/65/35) Ceramics

Abstract

Transparent lanthanum-doped lead zirconate titanate (PLZT) ceramics with high density were fabricated using spark plasma sintering (SPS), a recently developed hot-pressing method. A wet-dry combination method was used to prepare the fine PLZT powders. The average grain size of the PLZT ceramics was less than 1 lm, because of a relatively low sintering temperature and a very short sintering time. The transmittance of PLZT ceramics increased with an increase of calcination temperature up to 7001C and then it slightly decreased with further increase of calcination temperature. The transmittance strongly depended on the SPS temperature and heat-treatment temperature. The pellet sintered at 9001C for 10 min and heat treated at 8001C for 1 h with a thickness of 0.5 mm showed a transmittance of 31% at a wavelength of 700 nm. The relationships between the transmittance and the microstructure were investigated.

Dielectric properties of La1.75Ba0.25NiO4 ceramics prepared by spark plasma sintering

“…On the other hand, the spark plasma sintering (SPS) method has been used widely as a low temperature and rapid sintering method in the past decade [19][20][21][22][23][24][25]. The dense ceramics with smaller grain size, for example, nano-scale, can be easily prepared by SPS method because of its much lower sintering temperature and time [25].…”

Dense YMn2O5 Ceramics Prepared by Spark Plasma Sintering

“…Ceramics can be sintered to high densities by SPS at relatively low temperatures (several hundreds of degrees Celsius lower than that of conventional sintering) for very short times (typically a few minutes). SPS has been widely investigated to prepare metastable phase ceramics, composites, nanostructure ceramics, transparent ceramics, and so on 11–14 . With the merit of low sintering temperature, SPS seems to be a promising process for the preparation of dense YMn 2 O 5 ceramics with single orthorhombic structure because a sintering temperature lower than the decomposition temperature can be expected for SPS.…”

Transparent Barium Strontium Titanate Ceramics Prepared by Spark Plasma Sintering

“…T ransparent ferroelectric materials have been widely used in electro‐optical devices including digital light modulators, optical shutters and switchers, image memory devices, and so on 1 . Among them, transparent ferroelectric ceramics have attracted much attention due to their interesting electro‐optical properties and low production cost 2–4 . Up to now, transparent lead‐contained ceramics, such as (Pb,La)(Zr,Ti)O 3 (PLZT), PbZrO 3 –PbTiO 3 –Pb(Zn 1/3 Nb 2/3 )O 3 (PZT‐PZN), and PbZrO 3 –PbTiO 3 –Pb(Ni 1/3 Nb 2/3 )O 3 (PZT‐PNN), have been prepared using different sintering methods 5–7 .…”