Journal ArticleDOI
State of bismuth in BaBiO3 and BaBi1-xPbxO3 : Bi 4f photoemission and Bi L3 absorption spectroscopic studies
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TLDR
The 2p 6d feature in the BiL3 spectra has different energies in the semiconducting (0.0≤x < 0.7) and the superconducting (x=0.75) compositions of BaBi1−xPbxO3 as discussed by the authors.Abstract:
The 2p 6d feature in the Bi L3 spectra has different energies in the semiconducting (0.0≤x<0.7) and the superconducting (x=0.75) compositions of BaBi1−xPbxO3. The Bi 4f core level spectrum shows distinct features ascribable to Bi III and Bi V in BaBiO3 and in the semiconducting compositions; the width of the 4f peaks is also considerably larger in these compositions compared to that in BaBi0.25Pb0.75O3, which shows a single sharp Bi 4f feature.read more
Citations
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Local Structure of the Infrared Bismuth Luminescent Center in Bismuth‐Doped Silica Glass
TL;DR: In this article, the role and structure of the Al ions and the valence state of the luminescent Bi ions were experimentally examined, and it was recognized that aluminum ions with a sixfold corundum structure behave like a "generator" of the luminous center.
Journal ArticleDOI
Electronic states of BaBiO3- delta and K-doping effects studied by photoelectron spectroscopy
M. Nagoshi,T. Suzuki,Yasuo Fukuda,Kazuhiro Ueki,Ayako Tokiwa,M Kiruchi,Yasuhiko Syono,Masashi Tachiki +7 more
TL;DR: In this paper, the electronic states of Ba1-xKxBiO3- delta ( delta = 0 and 0.5) due to various surface treatments (fracturing, scraping and ion sputtering) have been studied by X-ray photoelectron spectroscopy.
Journal ArticleDOI
Hydrogen ion sensing characteristics of Na3BiO4–Bi2O3 mixed oxide nanostructures based EGFET pH sensor
Prashant Sharma,Prashant Sharma,Sandeep Gupta,Rini Singh,Kanad Ray,Shanker Lal Kothari,Soumendu Sinha,Soumendu Sinha,Rishi Sharma,Rishi Sharma,Ravindra Mukhiya,Ravindra Mukhiya,Kamlendra Awasthi,Manoj Kumar +13 more
TL;DR: In this article, vertically aligned Na3BiO4−Bi2O3 mixed oxide nanostructures were used as an EGFET-based pH sensor for hydrogen ion sensing.
Journal ArticleDOI
Influence of oxygen deficiency on the electronic and local structure of BaPb1−xBixO3−δ and Ba0.6K0.4BiO3−δ superconducting oxides: an X-ray absorption study
TL;DR: In this paper, a charge disproportionation model was proposed for perovskite oxides, which is based on the X-ray absorption near-edge structure (XANES) measurements at the PbL 3 and BiL 3 edges of BaPb 1− x Bi x O 3−δ (x = 0, δ ≤ 0.2; x = 0.25, 1).
Journal ArticleDOI
X-ray absorption near-edge studies of BaBiO3, BaBi1-xPbxO3 and Ba1-xKxBiO3 systems
TL;DR: In this paper, the valence state of Bi in pure and doped (Pb, K) BaBiO3 has been determined by X-ray absorption near-edge structure (XANES) spectroscopy.
References
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Journal ArticleDOI
Superconductivity and metal-semiconductor transition in BaPb1-xBixO3
S. Uchida,K. Kitazawa,S. Tanaka +2 more
TL;DR: The perovskite solid solutions BaPb1-xBixO3 exhibit unique properties in both metallic and semiconducting phases as discussed by the authors, and it turns out that the high T c originates from extremely strong electron-phonon interaction.
Journal ArticleDOI
Electronic structure ofBaPb1−xBixO3
Book
Chemistry of oxide superconductors
TL;DR: In this article, the role of crystal chemistry for the generation of high-Twc oxide superconductors and their relationship to the copper oxide-based supercondors was discussed, and a simple method to prepare high-twc superconducting thin films: pulsed laser deposition.
Journal ArticleDOI
Evidence of ‘mixed-valency’ character in the X-ray photoelectron spectra of α-diantimony tetraoxide and barium bismuth trioxide
A.F. Orchard,G. Thornton +1 more
TL;DR: In this paper, the X-ray photoelectron spectra of α-Sb2O4 and BaBiO3 were analyzed and the mixed-valency character of these oxides was found only after careful pretreatment of the samples in situ.
Journal ArticleDOI
X-ray absorption study of superconducting BaBi1-xPbxO3 and BaBiO3
Tord Claeson,J. B. Boyce,Frank Bridges,Frank Bridges,T. H. Geballe,J. M. Remeika,Arthur W. Sleight +6 more
TL;DR: In this article, two near neighbour Bi O distances were extracted by x-ray Absorption Fine Structure (XAFS) studies of BaBi1−xPbxO3.