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arXiv · 0810.5445

Raman spectroscopy of (K,Na)NbO3 and ((K,Na)1-xLix)NbO3

H. J. Trodahl·N. Klein·D. Damjanovic·N. Setter·B. Ludbrook·D. Rytz·M. Kuball
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Abstract

A Raman scattering spectroscopy study is reported through all four phases of a (K0.5Na0.5)NbO3 crystal and ((K0.5Na0.5)1-xLix)NbO3 for x=0.02 and 0.03. The transitions among the ferroelectric phases in the Li-free crystal are homogeneous and strongly hysteretic, with no evidence of a mixed-phase region between the rhombohedral and orthorhombic phases. The Raman pattern in the lowest-temperature phase in the Li-doped material differs significantly from that found for x=0 and suggest a structural phase boundary exists at for a Li concentration of less than 2%.

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H. J. Trodahl, N. Klein, D. Damjanovic, N. Setter, B. Ludbrook, D. Rytz, M. Kuball. 2008-10-30. Raman spectroscopy of (K,Na)NbO3 and ((K,Na)1-xLix)NbO3. https://doi.org/10.1063/1.3056658

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