Influences of pH on the structure, morphology and dielectric properties of bismuth titanate ceramics produced by a low-temperature self-combustion synthesis without an additional fuel agent

2012 ◽  
Vol 38 (4) ◽  
pp. 3001-3009 ◽  
Author(s):  
Warapong Krengvirat ◽  
Srimala Sreekantan ◽  
Ahmad-Fauzi Mohd Noor ◽  
Charoen Chinwanitcharoen ◽  
Hiroyuki Muto ◽  
...  
2012 ◽  
Vol 120 (1398) ◽  
pp. 58-63 ◽  
Author(s):  
Warapong KRENGVIRAT ◽  
Srimala SREEKANTAN ◽  
Ahmad-Fauzi b. MOHD NOOR ◽  
Atsunori MATSUDA ◽  
Charoen CHINWANITCHAROEN

2017 ◽  
Vol 49 (2) ◽  
pp. 107-115 ◽  
Author(s):  
Azlan Al-Amani ◽  
Mohd Noor

In this work, lanthanum doped-bismuth titanate with different contents were successfully prepared by low-temperature combustion synthesis, and subsequently, sintered at 1000 oC for 3 hours. Their structural, microstructural and electrical were systematically studied. It was found that the structural distortion of orthorhombic structure tends to transforms to a tetragonal with the increase in La content. This change is most probably due to relaxations of orthorhombic distortion and octahedral tilting because of the difference in the ionic radius of Bi3+ and La3+. Upon increasing of La content, the grain size remarkable decreases resulted in uniform grain size with better relative density. Thus, the electrical properties of La doping were greatly improved in comparison to pure sample.


2020 ◽  
Vol 10 (2) ◽  
pp. 251-263
Author(s):  
Anwar Askar ◽  
Doreya Ibrahim ◽  
Doaa Abdel Aziz ◽  
Mobarak Ali ◽  
Ezzat El-Fadaly

2011 ◽  
Vol 37 (2) ◽  
pp. 487-492 ◽  
Author(s):  
Nikolina Pavlović ◽  
Vladimir Koval ◽  
Jan Dusza ◽  
Vladimir V. Srdić

2005 ◽  
Vol 475-479 ◽  
pp. 1133-1136
Author(s):  
Jun Jie Hao ◽  
Xiao Hui Wang ◽  
Jian Ling Zhao ◽  
Long Tu Li

Textured bismuth titanate ceramics were successfully produced by spark plasma sintering, using plate-like Bi4Ti3O12 particles prepared by a molten salt method. The microstructure and electric properties of the samples were investigated. The results show that the textured Bi4Ti3O12 ceramics electric property is anisotropic in different direction, and spark plasma sintering is an effective sintering technology to get textured dense Bi4Ti3O12 ceramics at a low temperature.


2009 ◽  
Vol 373 (17) ◽  
pp. 1583-1587 ◽  
Author(s):  
T. Sareein ◽  
M. Unruan ◽  
A. Ngamjarurojana ◽  
S. Jiansirisomboon ◽  
A. Watcharapasorn ◽  
...  

2007 ◽  
Vol 336-338 ◽  
pp. 297-300 ◽  
Author(s):  
Jing Yan ◽  
Zhen Xing Yue ◽  
Jin Wang ◽  
Fei Zhao ◽  
Zhi Lun Gui ◽  
...  

Zinc titanate ceramics having excellent dielectric properties and low sintering temperature are promising materials for RF/microwave multilayer devices. In this paper, the ZnO-V2O5 addition was added to promote the sintering process in order to obtain low-temperature sintered ceramics with high quality factors. The sintering addition could also restrain ZnTiO3 phase from decomposition. Using this method, low-temperature sintered zinc titanate ceramics with excellent microwave dielectric properties of εr~ 25.3, Q×f~15200GHz, and τf ~ -16 ppm/oC were obtained at sintering temperature of 800oC. The low-fired mechanism, microstructure, phase formation and microwave dielectric properties of ceramics were investigated by XRD, SEM, EDS and network analysis techniques, respectively.


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