Structural and electrical properties of lanthanum-substituted lead titanate ceramics

2005 ◽  
Vol 78 (7-8) ◽  
pp. 655-667 ◽  
Author(s):  
Sarabjit Singh ◽  
O. P. Thakur ◽  
Chandra Prakash ◽  
K. K. Raina
2010 ◽  
Vol 409 (1) ◽  
pp. 62-65 ◽  
Author(s):  
Feifei An ◽  
Wenze He ◽  
Tingting Wang ◽  
Jian Yu

2001 ◽  
Vol 117 (8) ◽  
pp. 489-493 ◽  
Author(s):  
O.Pérez Martı́nez ◽  
F.Calderón Piñar ◽  
A.Peláiz Barranco

2011 ◽  
Vol 120 (2) ◽  
pp. 322-325 ◽  
Author(s):  
N. Obradović ◽  
S. Filipović ◽  
V. Pavlović ◽  
V. Paunović ◽  
M. Mitrić ◽  
...  

JOM ◽  
2015 ◽  
Vol 67 (12) ◽  
pp. 2869-2876 ◽  
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Z. Nurbaya ◽  
M. H. Wahid ◽  
M. D. Rozana ◽  
S. A. H. Alrokayan ◽  
H. A. Khan ◽  
...  

2016 ◽  
Vol 860 ◽  
pp. 99-104
Author(s):  
Masum Billah ◽  
Md Miftaur Rahman

The structure-property relationship of 0.3, 0.5 and 0.7mole% lanthanum (La2O3) doped Barium titanate (BaTiO3) ceramics prepared by solid state sintering under different sintering conditions were investigated in this research. The raw materials were La2O3 (grain size=~80nm) and BaTiO3 (grain size=100nm) powders. Field Emission Scanning Electron Microscope (FE-SEM) was used to examine grain size and surface morphology of sintered pellets & X-Ray Diffraction analysis was conducted to identify crystal structure. The results showed significantly improved grain size and electrical properties of BaTiO3 for 0.5 mole% La2O3 with desired grain size (0.8-1.3μm), high densification (>90% theoretical density) and stable dielectric constant (12700) at room temperature (f=100Hz) by lowering curie temperature around 30oC by sintering at 1300oC for 8 hrs. A gradual deterioration follows with increased doping concentration. So the research revealed that proper La3+ concentration can inhibit grain size and lower Curie temperature hence significantly improving the electrical properties of BaTiO3 ceramics.


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