Preparation and sintering behaviour of YBaCuO thick films prepared by tape casting

1992 ◽  
Vol 128 (1) ◽  
pp. 231-236 ◽  
Author(s):  
P. Durán ◽  
J. Tartaj ◽  
J. F. Fernández ◽  
C. Moure
Electronics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 140
Author(s):  
Lichen Liu ◽  
Ziping Cao ◽  
Min Chen ◽  
Jun Jiang

This paper reports the fabrication and characterization of (Bi0.48Sb1.52)Te3 thick films using a tape casting process on glass substrates. A slurry of thermoelectric (Bi0.48Sb1.52)Te3 was developed and cured thick films were annealed in a vacuum chamber at 500–600 °C. The microstructure of these films was analyzed, and the Seebeck coefficient and electric conductivity were tested. It was found that the subsequent annealing process must be carefully designed to achieve good thermoelectric properties of these samples. Conductive films were obtained after annealing and led to acceptable thermoelectric performance. While the properties of these initial materials are not at the level of bulk materials, this work demonstrates that the low-cost tape casting technology is promising for fabricating thermoelectric modules for energy conversion.


2006 ◽  
Vol 17 (2-4) ◽  
pp. 451-454 ◽  
Author(s):  
Sang Su Kim ◽  
Jun-Ki Chung ◽  
In-Sung Kim ◽  
Jae-Sung Song ◽  
Cheol Jin Kim ◽  
...  

2016 ◽  
Vol 163 (8) ◽  
pp. A1653-A1659 ◽  
Author(s):  
R. Jiménez ◽  
A. del Campo ◽  
M. L. Calzada ◽  
J. Sanz ◽  
S. D. Kobylianska ◽  
...  

2009 ◽  
Vol 3 (1-2) ◽  
pp. 65-71 ◽  
Author(s):  
Adelina Ianculescu ◽  
Sophie Guillemet-Fritsch ◽  
Bernard Durand

BaTiO3 powders were prepared by co-precipitation via oxalate route. The size, morphology and particle size distribution of the oxalate powders have been optimized by the control of different synthesis parameters during the precipitation reaction (nature of salts, concentration of different solutions, aging time). The single phase BaTiO3 oxide particles were obtained after a thermal decomposition of the as-synthesized powders at 850?C for 4 hours under air atmosphere. Oxide powders with a suitable specific surface area were selected in order to obtain thick films by the tape casting technique. The microstructure and dielectric properties of the thick films varied obviously depending on the deposition-calcination-sintering cycle used. A double deposition-calcination cycle followed by sintering, as well as a two step deposition-calcination-sintering procedure was used in order to improve the compactness and therefore, the dielectric behaviour. A higher dielectric constant value (~ 750) and lower dielectric losses (~ 2 %) were achieved at room temperature and at 1 kHz frequency for the dense, double-deposited film obtained after two deposition-calcination-sintering cycles. For this film, a superior value of the dielectric constant (~ 1100), almost frequency independent in the frequency range of 100 Hz - 10 kHz was gained also at the ferroelectric-paraelectric phase transition temperature of 130?C. .


2020 ◽  
Vol 9 (6) ◽  
pp. 693-702
Author(s):  
Jie Xu ◽  
Qiling Lu ◽  
Jinfeng Lin ◽  
Cong Lin ◽  
Xinghua Zheng ◽  
...  

AbstractEr3+-doped Ba0.85Ca0.15Ti0.9Zr0.1O3 (xEr-BCTZ, x = 0, 0.005, 0.01, 0.015) multifunctional thick films were prepared by the tape-casting method, using sol-gel-derived nano-sized powders as the matrix material. The surface morphologies, photoluminescence, and electrical properties were investigated. Dense microstructures with pure perovskite structure were obtained in the thick films. By doping an appropriate amount of Er3−, the samples exhibit superior up-conversion photoluminescence performance and simultaneously enhanced electrical performances. In addition, relatively higher texture fractions (with the largest value of 83.5%) were realized through introducing plate-like BaTiO3 templates to make the thick film grow by the [001]c orientation. And the ferro-/piezoelectric properties of the thick films were further improved, showing potential in the applications of micro-optoelectronic devices.


2014 ◽  
Vol 787 ◽  
pp. 322-325
Author(s):  
Da Ming Chen ◽  
Ying Li Liu ◽  
Yuan Xun Li ◽  
Jie Li ◽  
Huai Wu Zhang

M-type barium hexaferrite (BaM) is a promising gyromagnetic material for self-biased microwave\millimeter wave devices because of its large uniaxial magnetocrystalline anisotropy and low microwave loss in high frequency. Due to the limitation of growth conditions, it is difficult to deposit BaM films with enough thickness by PLD, MBE and Magnetron Sputtering for practical application. However, it is demonstrated in present experiment that large area polycrystalline BaM thick films (500μm) with self-biasing (high remanence) and low microwave loss can be successfully fabricated by tape casting. X-ray diffraction and Scanning electron microscopy results indicate that these BaM thick films have highly c-axis oriented crystallographic texture with hexagonal morphology. Magnetic hysteresis loops reveal that samples exhibit excellent properties with a saturate magnetization (4πMs) of 3606G, a high squareness ratio (Mr/Ms) of 0.82. In addition, ferromagnetic resonance (FMR) measurement shows that the FMR linewidth is as small as 431Oe at 48GHz. These parameters ensure these BaM thick films are potentially useful for self-biased microwave\millimeter wave devices such as circulator, phase shifter and filter.


2007 ◽  
Vol 27 (13-15) ◽  
pp. 3887-3891 ◽  
Author(s):  
M.A. de la Rubia ◽  
M. Peiteado ◽  
J. de Frutos ◽  
F. Rubio-Marcos ◽  
J.F. Fernández ◽  
...  

2007 ◽  
Vol 280-283 ◽  
pp. 763-766
Author(s):  
Xiang Ping Jiang ◽  
Yu Quan Chen ◽  
Helen L.H. Chan ◽  
Qing Rui Yin

PZT-based slurry with Newtonian behavior was prepared for tape casting. The viscoelasti cproperties of the slurry were studied. High quality of green tape and well sintered of PZT-based thick films are obtained using the PZT-based slurry with Newtonian behavior.


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