Preparation and characterization of LiNbO3 thin films by the aqueous citric gel method

Author

Sivakumar, B. ; Rai, S. Gokul ; Kumar, G. Ramesh

Author_Institution

Dept. of Phys., Univ. Coll. of Eng. Kancheepuram, Chennai, India

fYear

2014

fDate

6-8 March 2014

Firstpage

1

Lastpage

3

Abstract

LiNbO₃ thin films with well-developed grains were fabricated by spin-coating on SiO₂(111) substrates. Annealing in static air and oxygen atmosphere was performed at 400° C 500° C 600° C for 3 h. The films obtained were characterized by thin film XRD, scanning electron microscopy and elemental analysis. Electrical characterizations of the films pointed to ferroelectricity via hysteresis loop. The influence of oxygen atmosphere on crystallization, morphology and properties of LiNbO₃ thin films is discussed.

Keywords

X-ray chemical analysis; annealing; crystal microstructure; crystallisation; dielectric hysteresis; ferroelectricity; lithium compounds; scanning electron microscopy; sol-gel processing; spin coating; surface morphology; thin films; LiNbO₃; LiNbO₃ thin films; SiO₂; SiO₂(111) substrates; XRD; annealing; aqueous citric gel method; crystallization; elemental analysis; ferroelectricity; grains; hysteresis loop; morphology; oxygen atmosphere; scanning electron microscopy; spin-coating; static air; temperature 400 degC to 600 degC; time 3 h; Annealing; Educational institutions; Films; Lithium niobate; Silicon; Substrates; X-ray scattering; EDAX; LiNbO3 thin film; Spin coating; TGA/DTA; XRD;

fLanguage

English

Publisher

ieee

Conference_Titel

Devices, Circuits and Systems (ICDCS), 2014 2nd International Conference on

Conference_Location

Combiatore

Type

conf

DOI

10.1109/ICDCSyst.2014.6926186

Filename

6926186