Epitaxial Ba 2 NdFeNb 4 O 15 -based multiferroic nanocomposite thin films with tetragonal tungsten bronze structure

2017 ◽  
Vol 136 ◽  
pp. 1-5 ◽  
Author(s):  
T. Hajlaoui ◽  
C. Chabanier ◽  
C. Harnagea ◽  
A. Pignolet
Keyword(s):  
Thin Films ◽  
Tungsten Bronze ◽  
Tungsten Bronze Structure ◽  
Tetragonal Tungsten Bronze ◽  
Nanocomposite Thin Films ◽  
O 15

Processing Effects on the Microstructure of Sol-Gel Derived SBN Thin Films

1994 ◽  
Vol 346 ◽  
Author(s):  
L.A. Momoda ◽  
M.C. Gust ◽  
M.L. Mecartney
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Tungsten Bronze ◽  
Treatment Schedule ◽  
Size Distributions ◽  
Tungsten Bronze Structure ◽  
Tetragonal Tungsten Bronze ◽  
Transmission Electron ◽  
Processing Effects ◽  
Hydrolysis Conditions

ABSTRACTMicrostructural changes in sol-gel derived SrxBa1-xNb2O6 (SBN) thin films were monitored as a function of chemical variations in the precursor sol and of processing variations of the thin films. 6000À Sr0.5Ba0.5Nb2O6 thin films were deposited from different alkoxide based precursors under various hydrolysis conditions. The tetragonal tungsten bronze structure was achieved in films at temperatures on the order of 700°C. Preferential (001) orientation of the tetragonal lattice was found to be very dependent upon the substrate orientation as well as thermal treatment schedule. Transmission electron microscopy (TEM) was used to examine the film microstructure. Orientational effects were verified by TEM as well as a tendency for a porous structure in the alkoxide derived films. Substrate and processing dependent grain size and size distributions were also noted.

Epitaxial Growth of Sr0.3Ba0.7Nb2O6 Thin Films Prepared by Sol-Gel Process

1999 ◽  
Vol 606 ◽  
Author(s):  
Keishi Nishio ◽  
Jirawat Thongrueng ◽  
Yuichi Watanabe ◽  
Toshio Tsuchiya
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Epitaxial Growth ◽  
Raw Materials ◽  
Substrate Surface ◽  
Sol Gel ◽  
Tungsten Bronze ◽  
Monomethyl Ether ◽  
Tetragonal Tungsten Bronze ◽  
Sol Gel Process

AbstructWe succeeded in the preparation of strontium-barium niobate (Sr0.3Ba0.7Nb2O6 : SBN30)that have a tetragonal tungsten bronze type structure thin films on SrTiO3 (100), STO, or La doped SrTiO3 (100), LSTO, single crystal substrates by a spin coating process. LSTO substrate can be used for electrode. A homogeneous coating solution was prepared with Sr and Ba acetates and Nb(OEt)5 as raw materials, and acetic acid and diethylene glycol monomethyl ether as solvents. The coating thin films were sintered at temperature from 700 to 1000°C for 10 min in air. It was confirmed that the thin films on STO substrate sintered above 700°C were in the epitaxial growth because the 16 diffraction spots were observed on the pole figure using (121) reflection. The <130> and <310> direction of the thin film on STO were oriented with the c-axis in parallel to the substrate surface. However, the diffraction spots of thin film on LSTO substrate sintered at 700°C were corresponds to the expected pattern for (110).

Dielectric and ferroelectric properties of Sr 4 CaSmTi 3 Nb 7 O 30 with tetragonal tungsten bronze structure

2014 ◽  
Vol 23 (9) ◽  
pp. 097701
Author(s):  
Gao-Shang Gong ◽  
Yu-Jiao Fang ◽  
Shuai Huang ◽  
Chong-Yang Yin ◽  
Song-Liu Yuan ◽  
...  
Keyword(s):  
Ferroelectric Properties ◽  
Tungsten Bronze ◽  
Tungsten Bronze Structure ◽  
Tetragonal Tungsten Bronze
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