Preparation of crystalline LiNbO sub 3 films with preferred orientation by hydrolysis of metal alkoxides
- Nagoya Univ. (Japan)
Homogeneous and stoichiometric LiNbO{sub 3} films were prepared on substrates from double alkoxide solutions by a dip-coating method. Structural control of the double alkoxide solution is critical in synthesizing crystalline stoichiometric LiNbO{sub 3} films. The coordination states of alkoxides in solution were monitored by Ir and NMR spectroscopy. A viscosity of the double alkoxide solution was adjusted to a value of 6 {times} 10{sup {minus}3} to 7 {times} 10{sup {minus}3} N{center dot}s/m{sup 2} (6 to 7 cP) by partial hydrolysis and the concentration of the solution. Amorphous LiNbO{sub 3} films prepared on Si- or sapphire-single-crystal substrates from controlled alkoxide solutions began to crystallize at temperatures as low as 250{degree}C. Films on sapphire substrates crystallized with the preferred orientation along each orientation, such as (001), (110), and (012) but not on Si(100) and Si(111) substrates. The crystallinity of the initial thin-film coating of LiNbO{sub 3} significantly influenced the crystallization of films deposited subsequently.
- OSTI ID:
- 5880565
- Journal Information:
- Advanced Ceramic Materials; (USA), Journal Name: Advanced Ceramic Materials; (USA) Vol. 3:5; ISSN 0883-5551; ISSN ACEME
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DEPOSITION
DIP COATING
EXPERIMENTAL DATA
FILMS
HYDROLYSIS
INFORMATION
INFRARED SPECTRA
LITHIUM COMPOUNDS
LITHIUM OXIDES
LYSIS
MAGNETIC RESONANCE
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
NUCLEAR MAGNETIC RESONANCE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
RESONANCE
SOLVOLYSIS
SPECTRA
SURFACE COATING
SYNTHESIS
THIN FILMS
TRANSITION ELEMENT COMPOUNDS