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Browsing by Author "Upadhyay, Shail"

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Ceria co-doped with calcium (Ca) and strontium (Sr)

Jaiswal, Nandini; Kumar, Devendra; Upadhyay, Shail; and et.al. (Springerlink.com, 2013-07-11)

Co-doped samples of Ce0.95-xCa0.05SrxO1.95-x, where (x = 0.00, 0.01, 0.02, and 0.03), have been prepared by auto-combustion method and characterized to explore their use as a solid electrolyte for intermediate temperature ...
High temperature impedance spectroscopy of barium stannate, BaSnO3

Upadhyay, Shail (Indian Academy of Sciences, 2012-07-14)

Polycrystalline powder of BaSnO3 was prepared at 1300 °C using a high-temperature solid-state reaction technique. X-ray diffraction analysis indicated the formation of a single-phase cubic structure with lattice parameter: ...
Preparation and characterization of Ce0.85La0.15 − xSrxO{2 − (0.075 + x / 2)} solid electrolytes for intermediate temperature solid oxide fuel cells

Jaiswal, Nandini; Kumar, Devendra; Upadhyay, Shail; Parkash, Om (Institute for Ionics, 2014-06-27)

A few compositions in the system Ce0.85La0.15 − xSrxO{2 − (0.075 + x / 2)} have been prepared using citrate-nitrate method. More than 95 % of theoretical density has been obtained by sintering at 1,350 °C for 4 h in air. ...
Structural and optical characterizations of BaSnO3 nanopowder synthesized by aqueous sol-gel method

Kumar, Upendra; Jawed Ansaree, Md.; Upadhyay, Shail (University of Novi Sad, Faculty of Technology, 2017-08-10)

Precursor gel for preparation of nanocrystalline BaSnO3 powder was synthesised by aqueous sol-gel method using Ba(OH)2 · 8 H2O and Na2 SnO3 · 3 H2O as raw materials. Thermogravimetric and differential scanning calorimetric ...
Study of phase evolution and dielectric properties of Sr2Mn0.7Sn0.3O4

Nirala, Gurudeo; Upadhyay, Shail (University of Novi Sad, Faculty of Technology, 2023-06-15)

Ruddlesden-Popper oxide Sr2Mn0.7Sn0.3O4 was synthesized by solid state method by calcining at different temperatures between 1200 and 1500 °C. The phase evolution during thermal treatments was investigated and it was shown ...
Study of structural, electrical, and photoluminescent properties of SrCeO3 and Sr2CeO4

Yadav, Dharmendra; Kumar, Upendra; Upadhyay, Shail (Tsinghua University Press, 2019-02-09)

Phase pure powders of SrCeO3 and Sr2CeO4 have been synthesized by calcination at 1000 °C for 14 h via solid state ceramic route. Ceramics/pellets of these samples have been obtained by sintering at 1200 ℃ for 12 h. The ...
Thermal analysis of formation of nano-crystalline BaTiO3 using Ba(NO3 ) 2 and TiO2

Ansaree, Md. Jawed; Upadhyay, Shail (University of Novi Sad, Faculty of Technology, 2015-11-29)

The reaction of Ba(NO3)2 with TiO2 was studied by thermogravimetric (TG) and differential scanning calorimetric (DSC) techniques up to 1000 °C and in nitrogen atmosphere. It was found that the formation of BaTiO3 takes ...

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