Synthesis, structure and electrical behaviour of nickel-doped barium stannate

Upadhyay, Shail; Parkash, Om; Kumar, Devendra

doi:10.1016/j.jallcom.2006.05.111

Cited by 22 publications

(14 citation statements)

References 31 publications

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“…Two regions of conductance with different activation energy values could be outlined from the linear lgσ-1/T dependences (Figure 4a): the lower-temperature one at 150–300 °C and the higher-temperature one at 350–450 °C. Such an effect at close threshold temperature but with different activation energy values was observed in other studies by DC-conduction as well as impedance measurements [16,22]. The lower-temperature activation energy has low value of E A,l = 0.14–0.15 eV and is independent on annealing temperature of the samples (Figure 4b).…”

Section: Resultssupporting

confidence: 73%

“…Semiconductor characteristics determined by the frame of {SnO 6 } octahedra were reported to be varied through either n -doping: partial substitution of Ba by La [11,12] or substitution of Sn by Sb [13,14,15], or p -doping via Sn substitution by Ni, Cr, etc . [12,16,17]. On the other hand, cation substitution in a complex oxide could open wide perspectives for the optimization of surface reactivity by modifying its adsorptive, acid/base and RedOx properties.…”

Section: Introductionmentioning

confidence: 99%

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Nanocrystalline BaSnO3 as an Alternative Gas Sensor Material: Surface Reactivity and High Sensitivity to SO2

et al. 2015

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Nanocrystalline perovskite-type BaSnO3 was obtained via microwave-assisted hydrothermal route followed by annealing at variable temperature. The samples composition and microstructure were characterized. Particle size of 18–23 nm was unaffected by heat treatment at 275–700 °C. Materials DC-conduction was measured at variable temperature and oxygen concentration. Barium stannate exhibited n-type semiconductor behavior at 150–450 °C with activation energy being dependent on the materials annealing temperature. Predominant ionosorbed oxygen species types were estimated. They were shown to change from molecular to atomic species on increasing temperature. Comparative test of sensor response to various inorganic target gases was performed using nanocrystalline SnO2-based sensors as reference ones. Despite one order of magnitude smaller surface area, BaSnO3 displayed higher sensitivity to SO2 in comparison with SnO2. DRIFT spectroscopy revealed distinct interaction routes of the oxides surfaces with SO2. Barium-promoted sulfate formation favoring target molecules oxidation was found responsible for the increased BaSnO3 sensitivity to ppm-range concentrations of SO2 in air.

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Section: Resultssupporting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Nanocrystalline BaSnO3 as an Alternative Gas Sensor Material: Surface Reactivity and High Sensitivity to SO2

et al. 2015

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“…2(h) illuminates that the main body of ceramic is CCTO with less than stoichiometric content of Sr. Moreover, the deficiency of oxygen (Ca:O = 1:10) consists with previous investigations [14][15][16][17]. Fig.…”

Section: Methodssupporting

confidence: 81%

An effective method to decrease dielectric loss of CaCu3Ti4O12 ceramics

Mu¹,

Liu²,

He³

et al. 2009

Journal of Alloys and Compounds

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“…Barium stannate (BaSnO 3 ) is a cubic perovskite ntype semiconductor having a band gap of 3.1 eV [1] and it is stable up to 1250 °C [2]. Thus, for high performance applications, such as exhaust gas sensors [3], there is a demand of BSO.…”

Section: Introductionmentioning

confidence: 99%

Electrical studies on perovskite BaSnO3 nanostructures

Rajamanickam¹,

Rajashabala²,

Babu³

et al. 2014

AIP Conference Proceedings

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Electric double layer gate controlled non-linear transport in a nanostructured functional perovskite oxide film Appl. Phys. Lett. 104, 083515 (2014); 10.1063/1.4867081Scanning tunneling microscope study of electrical transport properties of nanoscale Schottky contacts between manganese silicide nanostructures and Si (111) Abstract. Perovskite barium stannate (BSO) nanostructures (NS) were prepared by wet chemical method. The structural and optical properties were investigated by XRD, SEM and UV-Vis spectroscopy, respectively. The absorption spectrum exhibits a band gap of 4.1 eV, which is blue shifted from bulk. Polarization hysteresis (P-E) of BSO nanomaterial shows anti-ferroelectric behavior. The nanomaterial showed drastic enhancement in dielectric constant, nearly 1300 times higher than that of already reported values and this is achieved at room temperature (RT) itself.

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Synthesis, structure and electrical behaviour of nickel-doped barium stannate

Cited by 22 publications

References 31 publications

Nanocrystalline BaSnO3 as an Alternative Gas Sensor Material: Surface Reactivity and High Sensitivity to SO2

Nanocrystalline BaSnO3 as an Alternative Gas Sensor Material: Surface Reactivity and High Sensitivity to SO2

An effective method to decrease dielectric loss of CaCu3Ti4O12 ceramics

Electrical studies on perovskite BaSnO3 nanostructures

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