Preparation and Characterization of Metal Alkoxide Derived Epitaxial Lead Titanate Based Thin Films

1994 ◽  
Vol 361 ◽  
Author(s):  
Keiichi Nashimoto ◽  
Shigetoshi Nakamura
Keyword(s):  
Thin Films ◽  
Lead Titanate ◽  
Solid Phase ◽  
Sol Gel ◽  
Pyrochlore Phase ◽  
Guided Wave ◽  
Metal Alkoxide ◽  
Rocking Curve ◽  
Sol Gel Process

ABSTRACTEpitaxial and highly oriented lead titanate based thin films were prepared by a sol-gel process using non-hydrolyzed methoxyethoxide precursors and RTA process. PbTiO3 crystallized with preferred (001) or (100) orientation on SrTiO3 (100) and MgO (100). Solid phase (001) oriented epitaxial growth of PZT on SrTio3 was observed at 425°C, directly from the amorphous phase. That of PZT on MgO was observed at temperatures above 550°C, after the formation of pyrochlore phase. The PZT on SrTiO3 had a single (001) orientation and rocking curve full width at half maximum less than 0.08°. PZT showed a weak preferred (111) orientation on sapphire (0001) substrates, while highly (111) oriented PLT thin films were obtained on them. The guided wave modes were excited by a prism coupling for PZT thin films crystallized on SrTiO3 and MgO. Electrical properties of epitaxial PZT and PLT thin films on Nb-SrTiO3 substrates were characterized.

Preparation and Characterization of Sol-Gel Derived Heteroepitaxial LiNbO3 and LiTaO3 Thin Films

1993 ◽  
Vol 310 ◽  
Author(s):  
Keiichi Nashimoto
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Metal Alkoxide ◽  
Bulk Single Crystal ◽  
Rocking Curve ◽  
X Ray ◽  
Sapphire Substrates ◽  
Sol Gel Process ◽  
Alkoxide Precursors

AbstractDense epitaxial LiNbO3 thin films without any misoriented plane on sapphire substrates were obtained with a sol-gel process utilizing 2-methoxyethanol based metal alkoxide precursors without pre-hydrolysis and rapid thermal annealing. Epitaxial LiNbO3 films annealed at 700°C were transparent and showed refractive indices close to bulk single crystal values. Epitaxial and transparent LiTaO3 films crystallized successfully on sapphire substrates with single orientations with the present process. X-ray rocking curve full widths at half maximum of epitaxial LiNbO3 and LiTaO3 films on sapphire (110) substrates and annealed at 700°C were less than 0.4 degree.

Characterization of magnesium-modified lead titanate thin films derived from a diol-based sol-gel process

2001 ◽  
Author(s):  
Chih-Ming Wang ◽  
Ying-Chung Chen ◽  
Ming-Cheng Kao ◽  
Yun-Hsing Lai
Keyword(s):  
Thin Films ◽  
Lead Titanate ◽  
Sol Gel ◽  
Sol Gel Process

Characterization of Calcium-Modified Lead Titanate Thin Films Derived from a Diol-Based Sol–Gel Process

2000 ◽  
Vol 39 (Part 1, No. 6A) ◽  
pp. 3579-3583 ◽  
Author(s):  
Chih-Ming Wang ◽  
Yao-Te Huang ◽  
Ying-Chung Chen ◽  
Maw-Shung Lee ◽  
Ming-Cheng Kao
Keyword(s):  
Thin Films ◽  
Lead Titanate ◽  
Sol Gel ◽  
Sol Gel Process

Optical and electrical characterization of Ni-doped orthoferrites thin films prepared by sol-gel process

2013 ◽  
Vol 61 (1) ◽  
pp. 10302 ◽  
Author(s):  
Feroz Ahmad Mir ◽  
Javid A. Banday ◽  
Christian Chong ◽  
Pierre Dahoo ◽  
Fayaz A. Najar
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Electrical Characterization ◽  
Sol Gel Process

Sol-gel derived Ba(Mg1/3Ta2/3)O3 thin films: Preparation and structure

1997 ◽  
Vol 12 (3) ◽  
pp. 596-599 ◽  
Author(s):  
Ji Zhou ◽  
Qing-Xin Su ◽  
K. M. Moulding ◽  
D. J. Barber
Keyword(s):  
Thin Films ◽  
Annealing Temperature ◽  
Volume Fraction ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Sol Gel Process ◽  
Small Grains

Ba(Mg1/3Ta2/3)O3 thin films were prepared by a sol-gel process involving the reaction of barium isopropoxide, tantalum ethoxide, and magnesium acetate in 2-methoxyethanol and subsequently hydrolysis, spin-coating, and heat treatment. Transmission electron microscopy, x-ray diffraction, and Raman spectroscopy were used for the characterization of the thin films. It was shown that the thin films tend to crystallize with small grains sized below 100 nm. Crystalline phase with cubic (disordered) perovskite structure was formed in the samples annealed at a very low temperature (below 500 °C), and well-crystallized thin films were obtained at 700 °C. Although disordered perovskite is dominant in the thin films annealed below 1000 °C, a low volume fraction of 1 : 2 ordering domains was found in the samples and grows with an increase of annealing temperature.

Design and Characterization of Interconnected, Microporous Hybrid Thin Films by a Sol−Gel Process

1997 ◽  
Vol 9 (11) ◽  
pp. 2583-2587 ◽  
Author(s):  
Yongan Yan ◽  
Yasukazu Hoshino ◽  
Zhibang Duan ◽  
S. Ray Chaudhuri ◽  
Arnab Sarkar
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Sol Gel Process ◽  
Hybrid Thin Films
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