Modified sol–gel preparation of LiNbO.sub.3./sub. target for PLD

0423059 - FZÚ 2014 RIV NL eng J - Journal Article
Jakeš, V. - Rubešová, V. - Erben, J. - Nekvindová, P. - Jelínek, Miroslav
Modified sol–gel preparation of LiNbO₃ target for PLD.
Optical Materials. Roč. 35, č. 12 (2013), s. 2540-2543. ISSN 0925-3467. E-ISSN 1873-1252
R&D Projects: GA ČR(CZ) GAP106/10/1477
Institutional support: RVO:68378271
Keywords : lithium niobate * PLD * sol–gel * Pechini polyesterification * transmittance
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.075, year: 2013
http://dx.doi.org/10.1016/j.optmat.2013.07.019

When preparing LiNbO3 thin layer by PLD, the maximal density of polycrystalline target is important. In this work, we prepared the precursor powders by sol–gel method and used them at PLD target synthesis. The gels were synthesized by Pechini polyesterification, using citric acid and ethylene glycol as an organic matrix constituents, and then decomposed using various temperatures (800, 600 and 400 °C) and atmospheres (air, nitrogen and oxygen in sequence). Out of several combinations tested, the decomposition at 800 °C in nitrogen followed by the oxidation at 400 °C in oxygen was found to be the best way to achieve the minimal particle size of powder precursor resulting in denser targets. The prepared targets were characterized by XRD and SEM.
Permanent Link: http://hdl.handle.net/11104/0229129