Effects of La₂O₃ Addition and PbO Excess on the Transmittance of PbZrO₃–PbTiO₃–Pb(Zn_1/3Nb_2/3)O₃ Ceramics by Spark Plasma Sintering

Abstract

PZ-PT-PZN) ceramics prepared by spark plasma sintering were investigated. When 1 mol% La 2 O 3 was added, the highest transmittance of 35% at 700 nm for PZ-PT-PZN ceramics was obtained. The improved transmittance was attributed to the increased relative density and the decreased optical anisotropy. The samples containing more than 1 mol% La 2 O 3 showed decreased transmittance, due to the appearance of secondary phases. The transmittance of PZ-PT-PZN ceramics increased slightly to 29% at 700 nm with increasing amount of excess PbO up to 10 mol% and thereafter decreased rapidly.

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.…”

Multiferroic ceramics in BaO–Y2O3–Fe2O3–Nb2O5 system

“…Recently, spark plasma sintering (SPS) with the merits of low sintering temperature and very short sintering time has been employed to fabricate fully dense multiferroic composites and avoid possible reactions between ferroelectric phases and magnetic phases [16][17][18][19]. By using the wet-chemical processing, in situ synthesis of multiferroic composites has been achieved and a three times larger magnetoelectric (ME) voltage coefficient was observed in the in situ synthesized samples [10].…”