Temperature dependent Raman scattering of the epitaxial Sr1.9Ca0.1NaNb5O15 film

W. C. Liu; Chee Leung Mak; K. H. Wong

doi:10.1016/j.tsf.2009.03.024

Temperature dependent Raman scattering of the epitaxial Sr1.9Ca0.1NaNb5O15 film

W. C. Liu, Chee Leung Mak, K. H. Wong

Research output: Journal article publication › Journal article › Academic research › peer-review

4 Citations (Scopus)

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- 1were 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.

Original language	English
Pages (from-to)	4822-4825
Number of pages	4
Journal	Thin Solid Films
Volume	517
Issue number	17
DOIs	https://doi.org/10.1016/j.tsf.2009.03.024
Publication status	Published - 1 Jul 2009

Keywords

Phase transition
Raman scattering
SCNN

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Materials Chemistry
Metals and Alloys
Surfaces, Coatings and Films
Surfaces and Interfaces

More information

10.1016/j.tsf.2009.03.024

Cite this

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title = "Temperature dependent Raman scattering of the epitaxial Sr1.9Ca0.1NaNb5O15 film",

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- 1were 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.",

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AU - Liu, W. C.

AU - Mak, Chee Leung

AU - Wong, K. H.

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Y1 - 2009/7/1

N2 - 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- 1were 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.

AB - 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- 1were 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.

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DO - 10.1016/j.tsf.2009.03.024

M3 - Journal article

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Temperature dependent Raman scattering of the epitaxial Sr1.9Ca0.1NaNb5O15 film

Abstract

Keywords

ASJC Scopus subject areas

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