Nonhydrolytic Sol−Gel Synthesis of Ba1-xSrxTiO3 Nanopowder

Xiang-hua, Xie; Yaming, Dong; Chen, and Chaojie; Lin, Lin

doi:10.1021/ie0494824

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…Among them, sol-gel method is one of the most well-known soft solution processes, for a widely used method to synthesize powders of micrometer, sub-micrometer and nanometer sizes with high purity and homogeneity [17][18][19]. Conventionally, there are four steps in the sol-gel process: sol preparations dissolution, gel preparations hydrolyzing, gel drying, and gel calcining.…”

Section: Study Of Perovskite Cacu 3 Ti 4 O 12 Nanopowdersmentioning

confidence: 99%

Sol-Gel Synthesis and Sensing Study of Perovskite CaCu₃Ti₄O₁₂ Nanopowders

Tian

Zhang

Yong-ming

et al. 2011

Integrated Ferroelectrics

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CaCu 3 Ti 4 O 12 nanopowders were fabricated by a facile effective sol-gel route using tetrabutyl titanate, calcium acetate and cupric nitrate as precursors. The intermediate xerogel was characterized by thermal analyzer and the products with different calcination temperature were then studied by IR spectrum. Further X-ray diffraction, transmission electronic microscopy, high-resolution transmission electron microscopy and energy dispersive X-ray spectrum were used to characterize the prepared CaCu 3 Ti 4 O 12 nanopowders. Additionally, the obtained CaCu 3 Ti 4 O 12 nanopowders were investigated as a gas sensitive material responding to ethanol atmosphere, and it showed high sensitivity for ethanol gas.

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Section: Study Of Perovskite Cacu 3 Ti 4 O 12 Nanopowdersmentioning

confidence: 99%

Sol-Gel Synthesis and Sensing Study of Perovskite CaCu₃Ti₄O₁₂ Nanopowders

Tian

Zhang

Yong-ming

et al. 2011

Integrated Ferroelectrics

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“…Due to such desirable properties, BST ceramics have been widely used in various applications such as dynamic random access memory, ceramic capacitors, pyroelectric sensors, infrared detectors, chemical sensors, biosensors, microwave devices and optoelectronic applications. [1][2][3][4][5] Furthermore, they are widely used in microelectronic mechanical system (MSMS) applications due to their ferroelectric characteristics. [6][7][8] The properties of BST can easily be modified by the addition of materials that form solid solutions in the perovskite structure.…”

Section: A Introductionmentioning

confidence: 99%

Tuning the optical, electrical and magnetic properties of Ba_0.5Sr_0.5Ti_xM_1−xO₃ (BST) nanopowders

Turky

Rashad

Kandil

et al. 2015

Phys. Chem. Chem. Phys.

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Metal doped barium strontium titanate (BST; Ba0.5Sr0.5TixM1-xO3) nanopowders have been successfully synthesized through the oxalate precursor route based on low cost starting materials. The effect of metal ion substitution, namely Fe(3+), Mn(2+), Co(2+) and Y(3+), on the crystal structure, microstructure and optical, electrical, dielectric and magnetic properties of BST was studied. The results revealed that a crystalline single cubic BST phase was formed for pure and Mn(2+), Co(2+) and Y(3+) ion-substituted BST samples, whereas a tetragonal BST structure was obtained for the Fe(3+) substituted BST sample at an annealing temperature of 1000 °C for 2 h. Furthermore, addition of the metal ions was found to decrease the crystallite size and unit cell volume of the produced BST phase. The microstructure of the produced pure BST phase was metal ion dependent. Most BST particles appeared as a cubic like structure. The transparency of BST was found to increase with metal substitution. Meanwhile, the band gap energy was increased from 3.4 eV for pure BST to 3.8, 4.1, 4.2 and 4.3 eV as the result of substitution by Fe(3+), Mn(2+) and Co(2+) and Y(3+) ions, respectively. The DC resistivity was metal ion dependent. The highest DC resistivity (ρ = 66.60 × 10(5) Ω cm) was accomplished with the Mn(2+) ion. Moreover, the addition of metal ions decreased the dielectric properties of the expected Mn(2+) ion and increased the magnetic properties.

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