Structural and electrical properties of Mn-doped Na0.5Bi0.5TiO3 lead-free single crystal

Chen, Y., Lam, K.H. , Zhou, D., Dai, J.Y., Luo, H.S., Jiang, X.P. and Chan, H.L.W. (2013) Structural and electrical properties of Mn-doped Na0.5Bi0.5TiO3 lead-free single crystal. Integrated Ferroelectrics, 141(1), pp. 120-127. (doi: 10.1080/10584587.2013.780141)

Abstract

The electrical properties and Raman spectroscopy of [001]-oriented pure lead-free Na0.5Bi0.5TiO3 (NBT) and manganese-doped NBT single crystals have been investigated. With the effect of Mn-doping, the remnant polarization P r has a great enhancement from 15.2 μC/cm2 to 30.0 μC/cm2, and the pyroelectric coefficient is improved significantly from 178 μC/m2K to 241 μC/m2K. The Mn-doping has further altered the domain structure of the crystals, as revealed by piezoresponse force microscopy study. The Raman studies suggest that the substitution effect of Mn ions on B-site cations of the perovskite structure results in enhancement of the performance of the Mn-doped NBT single crystals.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Lam, Dr Koko
• Authors: Chen, Y., Lam, K.H., Zhou, D., Dai, J.Y., Luo, H.S., Jiang, X.P., and Chan, H.L.W.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: Integrated Ferroelectrics
• Publisher: Taylor & Francis
• ISSN: 1058-4587
• ISSN (Online): 1607-8489