Local structure of nanopowders of refractory nitrides used to increase the critical current of high-temperature superconductors

The effect of dispersivity on the local-structure features in ZrN nanocrystals has been investigated by X-ray absorption (EXAFS) spectroscopy. The Debye-Waller factors and bond lengths have been determined for Zr-N and Zr-Zr coordination spheres. It is found that a decrease in the nanoparticle size...

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Bibliographic Details
Published in:Bulletin of the Russian Academy of Sciences. Physics 2008-08, Vol.72 (8), p.1062-1064
Main Authors: Menushenkov, A. P., Rudnev, I. A., Garifullin, I. A., Chernikov, R. V., Kashurnikova, O. V., Mikhailov, B. P.
Format: Article
Language:English
Subjects:
Critical current (superconductivity)
Debye-Waller factor
Hadrons
Heavy Ions
Nanocrystals
Nitrides
Nuclear Physics
Physics
Physics and Astronomy
Proceedings of the International Symposium “Orderings in Minerals and Alloys” (OMA-10)
Superconductors
X-rays
Zirconium
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Summary:The effect of dispersivity on the local-structure features in ZrN nanocrystals has been investigated by X-ray absorption (EXAFS) spectroscopy. The Debye-Waller factors and bond lengths have been determined for Zr-N and Zr-Zr coordination spheres. It is found that a decrease in the nanoparticle size leads to an increase in the static Debye-Waller factor for the Zr-Zr bond. The scale of changes is comparable with the increase in the Debye-Waller factor upon heating from 15 to 77 K.
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873808080121