Untitled

Wang, Y. J.; Wang, J. F.; Li, C. P.; Chen, H. C.; Su, Weizhou; Zhong, W. L.; Zhang, P. L.; Zhao, Lei

doi:10.1023/a:1006742110639

Cited by 16 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 for mixture of oxides. It can be seen that the X-ray diffraction analysis indicates a single phase, the cassiterite, in all systems, as already observed in other reports 1,5,[9][10][11] .…”

Section: Resultssupporting

confidence: 86%

The effect of Cr concentration and preparation method on the microstructure and electrical characterization of SnO2-based ceramics

et al. 2003

View full text Add to dashboard Cite

This paper reports a study of the influence of Cr concentration and preparation method in the electrical conductivity and microstructure of SnO2-based powders doped with Mn and Nb, prepared by an organic route (Pechini method) and a mixture of oxides. All the samples were compacted into discs and sintered at 1300 °C for 3h, resulting in ceramics with relative density varying between 81 and 99%. The powders were morphologically characterized by X-ray diffraction and their specific surface area was determined by N2 adsorption/desorption isotherms. Electrical conductivity characterization indicated that the conductivity decreases as Cr concentration increases, probably due to Cr segregation at grain boundaries, which reduces grain size, increasing the number of resistive boundaries, thus limiting the passage of current

show abstract

Section: Resultssupporting

confidence: 86%

The effect of Cr concentration and preparation method on the microstructure and electrical characterization of SnO2-based ceramics

et al. 2003

View full text Add to dashboard Cite

show abstract

“…As it is identified in W 6+ that the 5d band is empty, their electrons transfer into the adjacent oxygen band, which suggests ionic donor behaviour, allowing further electrons to populate the states deep within the bandgap [56,57]. Thus, if W ions are to be incorporated into the niobium oxide lattice, a transfer of charge will occur between a cation and an anion during ion displacement [58], leaving behind empty 5d bands which are the extrinsic defects [59].…”

Section: Proposed Band Structure For Niobium Tungsten Oxidementioning

confidence: 99%

Hydrothermally formed functional niobium oxide doped tungsten nanorods

Yu¹,

Liu²,

Wen³

et al. 2013

Nanotechnology

View full text Add to dashboard Cite

Nanorod forms of metal oxides are recognized as one of the most remarkable morphologies. Their structure and functionality have driven important advancements in a vast range of electronic devices and applications. In this work, we postulate a novel concept to explain how numerous localized surface states can be engineered into the bandgap of niobium oxide nanorods using tungsten. We discuss their contributions as local state surface charges for the modulation of a Schottky barrier height, the relative dielectric constant and their respective conduction mechanisms. Their effects on hydrogen gas molecule interaction mechanisms are also examined herein. We synthesized niobium tungsten oxide (Nb17W2O25) nanorods via a hydrothermal growth method and evaluated the Schottky barrier height, ideality factor, dielectric constant and trap energy level from the measured I-V versus temperature characteristics in the presence of air and hydrogen to show the validity of our postulations.

show abstract

Microstructure development and nonlinear electrical characteristics of the SnO2·CuO·Ta2O5 based varistors

Wang

et al. 2005

J Mater Sci

View full text Add to dashboard Cite

Untitled

Cited by 16 publications

References 11 publications

The effect of Cr concentration and preparation method on the microstructure and electrical characterization of SnO2-based ceramics

The effect of Cr concentration and preparation method on the microstructure and electrical characterization of SnO2-based ceramics

Hydrothermally formed functional niobium oxide doped tungsten nanorods

Microstructure development and nonlinear electrical characteristics of the SnO2·CuO·Ta2O5 based varistors

Contact Info

Product

Resources

About