Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/10785
Title: Temperature dependent Raman scattering of the epitaxial Sr1.9Ca0.1NaNb5O15 film
Authors: Liu, WC
Mak, CL 
Wong, KH
Keywords: Phase transition
Raman scattering
SCNN
Issue Date: 2009
Publisher: Elsevier Science Sa
Source: Thin solid films, 2009, v. 517, no. 17, p. 4822-4825 How to cite?
Journal: Thin Solid Films 
Abstract: Epitaxial ferroelectric Sr1.9Ca0.1NaNb5O15 (SCNN) thin films have been fabricated successfully by pulsed laser deposition on (100)MgO substrates. Temperature dependency of the vibrational modes of these films was investigated for the first time using Raman scattering technique. For temperatures ranging between 50 °C and 450 °C, two strong and broad A1(TO) phonons around 238 and 608 cm- 1, and one weak B1(TO) phonon around 142 cm- 1 were observed. Changes in the temperature dependency of the peak position, the full-width at half maximum and integrated intensity of the Raman modes were observed in different temperature ranges. These changes are attributed to the structural phase transitions between 200 °C and 325 °C for the SCNN films as well as their relaxor properties.
URI: http://hdl.handle.net/10397/10785
DOI: 10.1016/j.tsf.2009.03.024
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