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Preparation and characterization of nanocrystalline potassium lithium niobate powders and films

Published online by Cambridge University Press:  31 January 2011

H. X. Zhang ,
C. H. Kam ,
Y. Zhou ,
X. Q. Han ,
S. D. Cheng ,
C. Y. Chan  and
Y. L. Lam
H. X. Zhang*
Affiliation:
Microelectronics Division, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
C. H. Kam
Affiliation:
Microelectronics Division, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
Y. Zhou
Affiliation:
Microelectronics Division, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
X. Q. Han
Affiliation:
Microelectronics Division, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
S. D. Cheng
Affiliation:
Microelectronics Division, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
C. Y. Chan
Affiliation:
Microelectronics Division, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
Y. L. Lam
Affiliation:
Microelectronics Division, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
*
a)Address all correspondence to this author. Present address: Lightwaves2020, Inc., 1323 Great Mall Drive, Milpitas, CA 95132. e-mail: [email protected]
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Abstract

Potassium lithium niobate (KLN) powders and thin films were prepared from metalorganic compounds through the sol-gel process. A homogeneous and stable KLN precursor was synthesized by mixing the metal ethoxides. Powder gels were obtained through the hydrolysis of the solution by exposing it to the ambient atmosphere. Thin films were deposited on Si, SiO2/Si, and fused quartz by a spin coating technique. The pyrolysis and crystallization of KLN powders and films were investigated through the methods of differential thermal analysis, thermogravimetric analysis, x-ray diffraction, and Raman scattering spectroscopy. The results revealed that both KLN powders and films could crystallize into a tetragonal tungsten–bronze-type phase with appropriate annealing. Optical studies indicated that the films were highly transparent in the visible–near-infrared wavelength range and could support optical modes.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 12 , December 2001 , pp. 3609 - 3613
Copyright
Copyright © Materials Research Society 2001

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