Fabrication and electrical properties of barium strontium titanate thick films by modified sol–gel method

2007 ◽  
Vol 21 (1-4) ◽  
pp. 503-507 ◽  
Author(s):  
Hongfang Zhang ◽  
Liangying Zhang ◽  
Xi Yao
Keyword(s):  
Electrical Properties ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Thick Films ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Barium Strontium

Dielectric tunability of barium strontium titanate films prepared by a sol–gel method

2002 ◽  
Vol 408 (1-2) ◽  
pp. 194-199 ◽  
Author(s):  
M. Nayak ◽  
Tseung-Yuen Tseng
Keyword(s):  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dielectric Tunability ◽  
Barium Strontium

Porous Behavior and Dielectric Properties of Barium Strontium Titanate Synthesized by Sol−Gel Method in the Presence of Triethanolamine

2000 ◽  
Vol 12 (9) ◽  
pp. 2590-2596 ◽  
Author(s):  
Pramod K. Sharma ◽  
V. V. Varadan ◽  
V. K. Varadan
Keyword(s):  
Dielectric Properties ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Barium Strontium

Synthesis and characterization of highly-ordered barium-strontium titanate nanotube arrays fabricated by sol—gel method

2009 ◽  
Vol 18 (9) ◽  
pp. 3922-3927 ◽  
Author(s):  
Chen Yu ◽  
Chen Wei ◽  
Guo Feng ◽  
Li Mei-Ya ◽  
Liu Wei ◽  
...  
Keyword(s):  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Sol Gel ◽  
Synthesis And Characterization ◽  
Nanotube Arrays ◽  
Gel Method ◽  
Sol Gel Method ◽  
Titanate Nanotube ◽  
Barium Strontium

Morphological and structural properties of barium strontium titanate nanopowders synthesized via a sol-gel method

2020 ◽  
Vol 554 (1) ◽  
pp. 30-37
Author(s):  
Gasidit Panomsuwan ◽  
Hathaikarn Manuspiya
Keyword(s):  
Structural Properties ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Barium Strontium

Ferroelectric Composite of Ba1−xSrxTiO3 With Al2O3 and MgO Synthesized by Sol-Gel Method

1999 ◽  
Vol 606 ◽  
Author(s):  
Pramod K. Sharma ◽  
K. A. Jose ◽  
V. V. Varadan ◽  
V. K. Varadan
Keyword(s):  
Metal Oxides ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Phase Shifter ◽  
Sol Gel ◽  
Acrylic Polymer ◽  
Gel Method ◽  
Sol Gel Method ◽  
Weight Percentage ◽  
Barium Strontium

AbstractBarium strontium titanate with low dielectric constant, low loss tangent and high tunability, has unique application as phase shifter in radar and antenna. This work presents an alternative fabrication of the composite of barium strontium titanate with metal oxides such as Al2O3 and MgO. Ba1−xSrxTiO3 (BST), xergels of various compositions (x = 0.2, 0.4, 0.5 and 0.6) were prepared by sol-gel method. Xerogels were calcined at 800 °C. The structure of the final powders was investigated by x-ray diffraction (XRD). The resultant BST was then mixed with metal oxides in the desired weight percentage and ball milled in an organic solvent (ethyl alcohol) with a binder (acrylic polymer). The final samples were sintered at 1250 °C in air. The dielectric properties of the composites were determined by using impedance analyzer at the frequency of 1MHz. This work has reported the effect of Al2O3 and MgO, on the electronic behavior of the final BST-metal oxide composites.

Surface Structures and Dielectric Properties of Yttrium-doped Barium Strontium Titanate Films by Improved Sol-Gel method

2009 ◽  
Vol 24 (2) ◽  
pp. 387-391 ◽  
Author(s):  
Jia-Xuan LIAO ◽  
Hong-Quan WANG ◽  
Xiao-Feng PAN ◽  
Xiang-Jun FU ◽  
Jia ZHANG ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Sol Gel ◽  
Surface Structures ◽  
Gel Method ◽  
Sol Gel Method ◽  
Barium Strontium

scholarly journals The effect of Ba/Sr ratio on the Curie temperature for ferroelectric barium strontium titanate ceramics

2020 ◽  
Vol 10 (05) ◽  
pp. 2050021
Author(s):  
Hamed A. Gatea ◽  
Iqbal S. Naji
Keyword(s):  
Electric Field ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Sol Gel ◽  
Dielectric Measurement ◽  
Dielectric Measurements ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Barium Strontium

The powders of lead-free material namely (nonhazardous) barium strontium titanate (BST) with different stoichiometric compositions have been synthesized by the sol–gel method. Ba[Formula: see text]Sr[Formula: see text]TiO3 (BST) materials possess the properties of both ferroelectric and dielectric materials. These materials have spontaneous polarization that can be reversed by an applied electric field and they remain polarized even when the applied external electric field is removed. Synthesized samples have been subjected to structural, morphological, and dielectric characterizations. In this study, BST nanopowders with different substitutions of [Formula: see text] (where [Formula: see text]= 0.2, 0.3, 0.4, 0.5, and 0.6) were prepared by the sol–gel method, which is an easy method with low power consumption and low temperature requirement and produces higher yield. Nanopowders had average particle sizes of 12–24 nm and particles sizes after sintering at 1000[Formula: see text]C for 3 h were 197, 267, 79.80, 63.09, and 63 nm. All resulting pellets had a polycrystalline structure. Crystal structure, space group, morphological characterization, and particle size were determined from the structural analysis using X-ray powder diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM). The dielectric measurements were made for BST pellets under different frequencies (1–200 kHz) from room temperature to 250[Formula: see text]C. The dielectric constants for the bulk were 743, 1566, 1091, 766, and 626 for [Formula: see text]= 0.2, 0.3, 0.4, 0.5, and 0.6, respectively. From dielectric measurements, samples with [Formula: see text]= 0.2 and 0.3 had the Curie temperatures of 70[Formula: see text]C and 28.5[Formula: see text]C, respectively, and remained intact below 0[Formula: see text]C. The sample with [Formula: see text]= 0.3 had a good dielectric measurement and moderate dissipation factor; it may be used in capacitance application as energy stores.

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