Title :
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
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;
Conference_Titel :
Devices, Circuits and Systems (ICDCS), 2014 2nd International Conference on
Conference_Location :
Combiatore
DOI :
10.1109/ICDCSyst.2014.6926186
