Fabrication of fine and homogeneous MgB/sub 2/ nano powders by spray pyrolysis

Homogeneous nano-sized spherical MgB/sub 2/ powders were fabricated by spray pyrolysis. The influence of solution concentration, furnace reaction temperature and mass flow of carrier gas on morphology and average particle size were investigated. MgB/sub 2/ powders were synthesized with or without fu...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2005-06, Vol.15 (2), p.3349-3351
Main Authors: Ko, Jae-Woong, Yoo, Jaimoo, Kim, Young-Kuk, Chung, Kook-Chae, Chung, Hyungsik, Yoo, Sang-Im
Format: Article
Language:English
Subjects:
Critical current density
Fabrication
Flux pinning
Grain boundaries
Heat treatment
High temperature superconductors
Materials science and technology
Powders
spray pyrolysis
Spraying
Superconducting materials
Superconductivity
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Summary:Homogeneous nano-sized spherical MgB/sub 2/ powders were fabricated by spray pyrolysis. The influence of solution concentration, furnace reaction temperature and mass flow of carrier gas on morphology and average particle size were investigated. MgB/sub 2/ powders were synthesized with or without further heat treatment. For adequate preparation conditions, it has mostly spherical, solid and narrow particle size distribution. Average particle size (X/sub 50/) distribution was below 100 nm. The critical temperature for the synthesized MgB/sub 2/ was around 36 K.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2005.848889