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Genesis, Structural, and Transport Properties of La2Mo2-xWxO9 Prepared via Mechanochemical Activation Full article

Journal Ionics
ISSN: 0947-7047 , E-ISSN: 1862-0760
Output data Year: 2017, Volume: 23, Number: 4, Pages: 877-887 Pages count : 11 DOI: 10.1007/s11581-016-1869-9
Tags Doping, FTIR, Ionic conductivities, Materials preparations, XRD
Authors Pavlova S. 1 , Bespalko Y. 1 , Krieger T. 1 , Sadykov V. 1,2 , Uvarov N. 3
Affiliations
1 Boreskov Institute of Catalysis SB RAS, Pr. Lavrentieva, 5, Novosibirsk, Russian Federation 630090
2 Novosibirsk State University, Novosibirsk, Russian Federation
3 Institute of Solid State Chemistry SB RAS, Novosibirsk, Russian Federation

Funding (2)

1 Federal Agency for Scientific Organizations V.45.3.8.
2 Russian Science Foundation 16-13-00112

Abstract: Fast oxide-ion conductors La2Mo2-xWxO9 (x = 0–1) have been prepared using mechanochemical activation (MA) of starting oxides in a high-power planetary ball mill. Studies of La2Mo2-xWxO9 genesis and structural properties using thermal analysis, XRD, SEM, IR, and Raman spectroscopy have revealed that MA results in the formation of an amorphous precursor, while the cubic β-phase is formed after calcination at 700–900 °C. Due to a high dispersion of powders, high-density pellets of W-LAMOX ceramics have been obtained already after sintering at 950 °C. Their electrical conductivity measured by the impedance spectroscopy depends on the W concentration being sufficiently high (up to 5.6∙10−3 S/cm at 630 °C) at temperatures below 650 °C.
Cite: Pavlova S. , Bespalko Y. , Krieger T. , Sadykov V. , Uvarov N.
Genesis, Structural, and Transport Properties of La2Mo2-xWxO9 Prepared via Mechanochemical Activation
Ionics. 2017. V.23. N4. P.877-887. DOI: 10.1007/s11581-016-1869-9 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
Submitted: Jun 9, 2016
Accepted: Oct 13, 2016
Published online: Nov 3, 2016
Published print: Apr 1, 2017
Identifiers:
Web of science: WOS:000399829200009
Scopus: 2-s2.0-84994335099
Elibrary: 29467016
Chemical Abstracts: 2016:1784144
Chemical Abstracts (print): 171:526225
OpenAlex: W2548343231
Citing:
DB Citing
Web of science 9
Scopus 10
Elibrary 11
OpenAlex 9
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