scholarly journals Barium titanate thick films prepared by screen printing technique

2010 ◽  
Vol 4 (2) ◽  
pp. 53-58 ◽  
Author(s):  
Mirjana Vijatovic ◽  
Jelena Bobic ◽  
Biljana Stojanovic ◽  
Barbara Malic
Keyword(s):  
Electrical Properties ◽  
Barium Titanate ◽  
Screen Printing ◽  
Thick Films ◽  
Temperature Hysteresis ◽  
Chemical Route ◽  
Air Atmosphere ◽  
Screen Printing Technique ◽  
Printing Technique ◽  
Silver Palladium

The barium titanate (BaTiO3) thick films were prepared by screen printing technique using powders obtained by soft chemical route, modified Pechini process. Three different barium titanate powders were prepared: i) pure, ii) doped with lanthanum and iii) doped with antimony. Pastes for screen printing were prepared using previously obtained powders. The thick films were deposited onto Al2O3 substrates and fired at 850?C together with electrode material (silver/palladium) in the moving belt furnace in the air atmosphere. Measurements of thickness and roughness of barium titanate thick films were performed. The electrical properties of thick films such as dielectric constant, dielectric losses, Curie temperature, hysteresis loop were reported. The influence of different factors on electrical properties values was analyzed.

POLYETHYLENE OXIDE-CU COMPOSITE THICK FILMS FOR LPG SENSING

2011 ◽  
Vol 25 (31) ◽  
pp. 4199-4203
Author(s):  
P. S. MORE ◽  
Y. B. KHOLLAM ◽  
PANKAJ KOINKAR ◽  
N. D. SALI ◽  
P. N. SHELKE ◽  
...  
Keyword(s):  
Polyethylene Oxide ◽  
Screen Printing ◽  
Gas Sensing ◽  
Thick Films ◽  
Sensing System ◽  
Screen Printing Technique ◽  
Printing Technique ◽  
Cu Additive ◽  
Very High ◽  
Lpg Sensing

The LPG gas sensing response of polyethylene oxide ( PEO )- Cu ( Cu = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 and 1.0 wt. %) composite thick films prepared on alumina substrates by using novel screen printing technique are reported in present paper. The gas sensing responses of films were tested at 1000 ppm of LPG by using home-built static gas sensing system [between room temperature - 50 °C]. A very high value of SF = 1400 was obtained at an optimum temperature of 47 °C for a film with Cu = 0.7 wt.%. Further, better LPG sensing response, SF = 700 was obtained at low operating temperature = 36 °C for a film with Cu = 0.2 wt. %. The LPG sensing responses of the films were found to be strongly influenced by concentration level of Cu additive.

Realization of hexagonal barium ferrite thick films on Si substrates using a screen printing technique

2008 ◽  
Vol 41 (9) ◽  
pp. 095006 ◽  
Author(s):  
Yajie Chen ◽  
Ian Smith ◽  
Anton L Geiler ◽  
Carmine Vittoria ◽  
Volodymyr Zagorodnii ◽  
...  
Keyword(s):  
Barium Ferrite ◽  
Screen Printing ◽  
Thick Films ◽  
Si Substrates ◽  
Screen Printing Technique ◽  
Printing Technique ◽  
Hexagonal Barium Ferrite

scholarly journals Screen Printed La2/3Sr1/3MnO3 Thick Films on Alumina Substrates

1998 ◽  
Vol 13 (9) ◽  
pp. 2623-2631 ◽  
Author(s):  
L. Durand ◽  
Ll. Balcells ◽  
A. Calleja ◽  
J. Fontcuberta ◽  
X. Obradors
Keyword(s):  
High Temperature ◽  
Mechanical Stress ◽  
Screen Printing ◽  
Thick Films ◽  
High Resistivity ◽  
Low Field ◽  
Screen Printing Technique ◽  
Printing Technique ◽  
Screen Printed

We report here on the preparation of La2/3Sr1/3MnO3 magnetoresistive thick films on polycrystalline Al2O3 substates by using the screen printing technique. It is shown that films can be obtained using high temperature sintering. While there is a reacted layer, this improves adhesion and is not too troublesome if the films are made thick enough. It is shown that PbO–B2O3 –SiO2 glass additives allow sintering at lower temperatures and can be used to improve the mechanical stress of the films. However, it is found that glass concentrations large enough to significantly improve the film adherence result in a weak low field magnetoresistance probably because grains are coated with high resistivity material. Strategies to overcome these difficulties are discussed.

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