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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13124
Title: X-ray photoelectron spectroscopy and ion dynamics study of W6+ doped La2Mo2O9 as SOFC electrolyte
Authors: Siddharth
Bysakh S.
Sil, Anjan
Published in: Materials Research Bulletin
Abstract: The structural stability of La2Mo2-xWxO9 is well reported by many researchers but its studies on photoelectron spectroscopy, structural behaviour in Ar-H2 (reducing) atmosphere and ion dynamics are rarely reported. Here we report for the first time, to the best of authors’ knowledge, the above studies for W-doped La2Mo2O9 compounds. La2Mo2O9 doped with W6+ over the range of 0.25 ≤ x ≤ 1.75 at Mo6+ site is synthesised by solid-state reaction route. The x-ray diffraction studies show that at x = 0.5 the lattice parameter of the unit cell starts decreasing as a consequence of decrease in bond length between various elements present in the compound. The XPS analysis shows that Mo in La2Mo2-xWxO9 is very much sensitive to reduction. The temperature dependent a.c. impedance spectroscopy study of La2Mo2-0.5W0.5O9 has been reported over the temperature range up to 653 K. © 2018 Elsevier Ltd
Citation: Materials Research Bulletin (2018), 105(): 36-44
URI: https://doi.org/10.1016/j.materresbull.2018.04.027
http://repository.iitr.ac.in/handle/123456789/13124
Issue Date: 2018
Publisher: Elsevier Ltd
Keywords: Ceramics
Crystal structure
Ionic conductivity
Photoelectron spectroscopy
ISSN: 255408
Author Scopus IDs: 57201779270
6603150324
7003754102
Author Affiliations: Siddharth, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India, Advanced Materials Characterisation Unit, Central Glass and Ceramic Research Institute, Kolkata, 700032, India
Bysakh, S., Advanced Materials Characterisation Unit, Central Glass and Ceramic Research Institute, Kolkata, 700032, India
Sil, A., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Corresponding Author: Sil, A.; Department of Metallurgical and Materials Engineering, Indian Institute of Technology RoorkeeIndia; email: asil1fmt@iitr.ac.in
Appears in Collections:Journal Publications [MT]

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