Abstract
Niobium compounds continue to be an interesting family of superconductors, with the recent addition of oxynitrides to it, which can be categorized as low-T c superconductors (LTS) because they exhibit superconductivity below T c∼17 K. In this paper, we report the superconducting properties of three members of the family of niobium oxynitrides, viz. (Nb 0.89Al 0.11)(N 0.84O 0.16), (Nb 0.95Mg 0.05)(N 0.92O 0.08) and (Nb 0.87Si 0.09□ 0.04)(N 0.87O 0.13). Low temperature dc and ac magnetization measurements have been performed. In addition, heat capacity has been recorded at low temperature under applied magnetic fields. A detailed analysis of the data is presented.
Original language | English |
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Pages (from-to) | 66-71 |
Number of pages | 6 |
Journal | Journal of Solid State Chemistry |
Volume | 188 |
DOIs | |
State | Published - Apr 2012 |
Keywords
- Heat capacity
- Magnetic measurement
- Niobium oxynitride
- Superconductor