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Effect of La doping in transparent 0.67Pb(Mg1/3Nb2/3)O3–0.33PbTiO3 ceramics fabricated by conventional sintering

Published online by Cambridge University Press:  24 July 2014

Ichiro Fujii ,
Hiroyuki Ono  and
Takahiro Wada
Ichiro Fujii*
Affiliation:
Department of Materials Chemistry, Ryukoku University, Seta, Otsu 520-2194, Japan
Hiroyuki Ono
Affiliation:
Department of Materials Chemistry, Ryukoku University, Seta, Otsu 520-2194, Japan
Takahiro Wada
Affiliation:
Department of Materials Chemistry, Ryukoku University, Seta, Otsu 520-2194, Japan
*
a)Address all correspondence to this author. e-mail: ifujii@rins.ryukoku.ac.jp
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Abstract

Transparent 0.67(Pb1−xLax)(Mg1/3Nb2/3)O3–0.33(Pb1−xLax)TiO3 (x = 0–0.05) ceramics were successfully prepared without using a hot-pressing technique. The optical transmittance at the wave length of 400–2000 nm increased with increasing lanthanum (La) content, x from 0 to 0.03. The transmittance at 600–2000 nm further increased (with the highest transmittance of 68% at 2000 nm for ceramics with thickness of 0.5 mm) at x = 0.04 and 0.05, while the transmittance at 400–600 nm decreased. X-ray diffraction patterns suggested that the overall increase in the transmittance with x was associated with a change in the crystal systems from a monoclinic phase to a pseudocubic phase, and the decrease at x = 0.04 and 0.05 was related to the formation of an impurity second phase. Their microstructures and dielectric properties were also studied.

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Articles
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Journal of Materials Research , Volume 29 , Issue 19: Focus Issue: Optical Ceramics Science , 14 October 2014 , pp. 2260 - 2265
Copyright
Copyright © Materials Research Society 2014 

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