The effect of Gd3+ doped in lead barium niobate ceramics

2018 ◽  
Author(s):  
Raghavendra Vemuri ◽  
B. Suryanarayana ◽  
K. Chandra Mouli ◽  
P. V. Achary ◽  
K. Ch.V. Rajulu
Keyword(s):  
Lead Barium Niobate

scholarly journals Dielectric and piezoelectric nonlinear properties of slightly textured lead barium niobate ceramics

2019 ◽  
Vol 125 (2) ◽  
pp. 024101 ◽  
Author(s):  
Diego A. Ochoa ◽  
Jorge A. Casals ◽  
Michel Venet ◽  
Jean-Claude M’Peko ◽  
Jose E. García
Keyword(s):  
Nonlinear Properties ◽  
Lead Barium Niobate

Processing and electrical properties of Pb0.6Ba0.4Nb2O6 ceramics

2010 ◽  
Vol 25 (11) ◽  
pp. 2143-2149 ◽  
Author(s):  
Sinan Dursun ◽  
Cihangir Duran
Keyword(s):  
Electrical Properties ◽  
Single Phase ◽  
Powder Processing ◽  
Ferroelectric Properties ◽  
Tape Casting ◽  
Tungsten Bronze ◽  
Liquid Phase Sintering ◽  
Boundary Phase ◽  
Lead Barium Niobate ◽  
Reactive Mixture

Lead barium niobate (PBN or PbxBa1–xNb2O6) is a promising tungsten bronze ceramic system that has a morphotropic phase boundary between the orthorhombic and tetragonal phases at x ≈ 0.63, where the spontaneous polarization (Ps ≈ 60–70 μC/cm2) and other ferroelectric properties are known to be higher. However, even textured PBN60 ceramics have low Ps (∼23.9 μC/cm2) and piezoelectric charge coefficient (d33 ≈ 236 pC/N) as compared to the single crystal counterparts. The aim of this study is to control powder processing, green body formation, and sintering conditions to enhance both densification and electrical properties. Therefore, samples were prepared by tape casting methods using single phase PBN60 and reactive mixture of PbNb2O6 and BaNb2O6 powders. Three wt% excess PbO was found to be necessary for densification. Our results showed that undoped PBN60 ceramics reached Ps = 33 μC/cm2, d33 = 305 pC/N, and had a Tc = 340–350 °C. These results are much higher than the reported values in the literature, which can be attributed to the careful ceramic processing such as tape casting (e.g., homogenous green structure), annealing (e.g., control of excess grain boundary phase), and liquid phase sintering (e.g., higher densification).

Photorefractive properties of tungsten bronze ferroelectric lead barium niobate (Pb1−xBaxNb2O6) crystals

1998 ◽  
Vol 83 (11) ◽  
pp. 5967-5972 ◽  
Author(s):  
Myeongkyu Lee ◽  
Robert S. Feigelson ◽  
Alice Liu ◽  
Lambertus Hesselink
Keyword(s):  
Tungsten Bronze ◽  
Lead Barium Niobate

Enhanced photorefractive effects of cerium-doped lead barium niobate crystals

2000 ◽  
Vol 17 (4) ◽  
pp. 542 ◽  
Author(s):  
Alice Liu ◽  
Myeongkyu Lee ◽  
Lambertus Hesselink
Keyword(s):  
Lead Barium Niobate ◽  
Photorefractive Effects
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