

Author: Kumaragurubaran S. Takekawa S. Nakamura M. Ganesamoorthy S. Kitamura K.
Publisher: Taylor & Francis Ltd
ISSN: 0015-0193
Source: Ferroelectrics, Vol.326, Iss.1, 2005-01, pp. : 113-116
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Abstract
Pure and MgO doped (up to 4 mol%) near-stoichiometric LiNbO 3 crystals are grown from Li rich (Li-55 mol%) melt. Significant improvement in the optical properties such as increase of optical damage resistance, accompanied by a shift in the –OH peak position in FTIR spectrum, and transparent range is observed at 1.75 mol% of MgO concentration in the crystal. Also the coercive field required for ferroelectric domain switching is minimum at 1.75 mol% MgO doping. Based on the results, the correlation between the defect structure and ferroelectric domain switching behavior in pure and MgO doped SLN is discussed.
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