Abstract Title

Ultraviolet Raman Spectroscopy of Lead Zirconate Titinate Nanotubes

Disciplines

Condensed Matter Physics

Abstract

Lead zirconate titanate, PbZr1-xTixO3 (PZT) nanotubes of different wall thicknesses ranging from 3 to 80 nm deposited on (001) -oriented SrTiO3 substrates have been studied by variable-temperature ultraviolet Raman spectroscopy. Spectra were measured in the temperature range of 10 – 800 K with ultraviolet excitation by a 325 nm He-Cd laser. The spectra of the PZT thin film were measured for comparison. Analysis of temperature dependence of Raman intensities allowed us to determine ferroelectric phase transition temperature as a function of wall thickness, which was found to vary from ~100 to 650 K. At wall thicknesses above 20 nm the he phase transition temperature of the nanotubes aproaches its bulk value.

Comments

Poster #Th54

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Ultraviolet Raman Spectroscopy of Lead Zirconate Titinate Nanotubes

Lead zirconate titanate, PbZr1-xTixO3 (PZT) nanotubes of different wall thicknesses ranging from 3 to 80 nm deposited on (001) -oriented SrTiO3 substrates have been studied by variable-temperature ultraviolet Raman spectroscopy. Spectra were measured in the temperature range of 10 – 800 K with ultraviolet excitation by a 325 nm He-Cd laser. The spectra of the PZT thin film were measured for comparison. Analysis of temperature dependence of Raman intensities allowed us to determine ferroelectric phase transition temperature as a function of wall thickness, which was found to vary from ~100 to 650 K. At wall thicknesses above 20 nm the he phase transition temperature of the nanotubes aproaches its bulk value.