Structural and Magnetic Properties of V-Ti-Si Alloy Superconductors
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arXiv
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| Format: | Preprint |
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2023
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| author | Khandelwal, Asi Chandra, L. S. Sharath Sagdeo, Archna Singh, Rashmi Chattopadhyay, M. K. |
| author_facet | Khandelwal, Asi Chandra, L. S. Sharath Sagdeo, Archna Singh, Rashmi Chattopadhyay, M. K. |
| contents | The structural and magnetic properties of the as-cast and annealed V$_{0.6-x}$Si$_x$Ti$_{0.4}$ ($x$ = 0, 0.05, 0.10, 0.15) alloy superconductors are reported here. It is found that addition of silicon to the V-Ti alloys results in eutectic precipitation of Ti$_{5}$Si$_3$-phase in the body centred cubic (bcc) $β$-V-Ti matrix. In the as-cast V$_{0.6-x}$Si$_x$Ti$_{0.4}$ alloys, the superconducting transition temperature (T$_{C}$) changes non-monotonically with increasing silicon content whereas after annealing, it is about 7.7 K for all the alloys. On the other hand, the upper critical field decreases and the coherence length increases after annealing in the x = 0.10 alloy. The variations in the superconducting properties in the alloys are related to the solubility of 6 at.% Si in the V$_{0.60}$Ti$_{0.40}$ alloy and the vanadium enrichment in the $β$ matrix due to the precipitation of Ti$_{5}$Si$_3$ phase. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2307_16623 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Structural and Magnetic Properties of V-Ti-Si Alloy Superconductors Khandelwal, Asi Chandra, L. S. Sharath Sagdeo, Archna Singh, Rashmi Chattopadhyay, M. K. Superconductivity The structural and magnetic properties of the as-cast and annealed V$_{0.6-x}$Si$_x$Ti$_{0.4}$ ($x$ = 0, 0.05, 0.10, 0.15) alloy superconductors are reported here. It is found that addition of silicon to the V-Ti alloys results in eutectic precipitation of Ti$_{5}$Si$_3$-phase in the body centred cubic (bcc) $β$-V-Ti matrix. In the as-cast V$_{0.6-x}$Si$_x$Ti$_{0.4}$ alloys, the superconducting transition temperature (T$_{C}$) changes non-monotonically with increasing silicon content whereas after annealing, it is about 7.7 K for all the alloys. On the other hand, the upper critical field decreases and the coherence length increases after annealing in the x = 0.10 alloy. The variations in the superconducting properties in the alloys are related to the solubility of 6 at.% Si in the V$_{0.60}$Ti$_{0.40}$ alloy and the vanadium enrichment in the $β$ matrix due to the precipitation of Ti$_{5}$Si$_3$ phase. |
| title | Structural and Magnetic Properties of V-Ti-Si Alloy Superconductors |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2307.16623 |