Fabrication of Transparent <scp> <scp>Pb</scp> </scp> ( <scp> <scp>Mg</scp> </scp> _1/3 <scp> <scp>Nb</scp> </scp> _2/3 ) <scp> <scp>O</scp> </scp> ₃ – <scp> <scp>PbTiO</scp> </scp> ₃ Based Ceramics by Conventional Sintering

Abstract

Transparent 0.9 Pb ( Mg 1/3 Nb 2/3 ) O 3 –0.1 PbTiO 3 ( PMN ‐ PT ) based ceramics were prepared by a conventional solid‐state synthesis without using a hot‐press method. The ceramics became transparent when they were sintered in an O 2 atmosphere. The optical transmission increased with decreasing diameter of the calcined powder, which was controlled by the size of zirconia ball‐milling media. Substitution of 3 mol% La for Pb in PMN ‐ PT further increased the optical transmission to 68% at the wavelength of 2000 nm, which was comparable to that of hot‐pressed Pb ( Mg 1/3 Nb 2/3 ) O 3 ‐ PbTiO 3 based transparent ceramics.