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DC Field | Value | Language |
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dc.contributor.author | Shirage, Parasharam Maruti | en_US |
dc.date.accessioned | 2022-03-17T01:00:00Z | - |
dc.date.accessioned | 2022-03-21T11:12:34Z | - |
dc.date.available | 2022-03-17T01:00:00Z | - |
dc.date.available | 2022-03-21T11:12:34Z | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | Iyo, A., Hira, K., Tokiwa, K., Tanaka, Y., Hase, I., Yanagisawa, T., . . . Eisaki, H. (2014). Superconductivity at the highest transition temperature of 8.1 K in a simple cubic AuxSb1-x-yTey alloy system synthesized under high pressure. Superconductor Science and Technology, 27(2) doi:10.1088/0953-2048/27/2/025005 | en_US |
dc.identifier.issn | 0953-2048 | - |
dc.identifier.other | EID(2-s2.0-84892579741) | - |
dc.identifier.uri | https://doi.org/10.1088/0953-2048/27/2/025005 | - |
dc.identifier.uri | https://dspace.iiti.ac.in/handle/123456789/7700 | - |
dc.description.abstract | We have investigated superconductivity and structure in a gold-antimony-tellurium ternary alloy system (AuxSb 1-x-yTey) synthesized under high pressure. We found that Au0.125Sb0.75Te0.125 and AuSb6Te when crystallized in simple cubic structures (α-Po type), which are reported to be semiconductors above 20 K, are superconductors with a transition temperature (Tc) of 6.7 K. The structure and Tc are mapped on an Au-Sb-Te triangular diagram. A β-Po-type rhombohedral structure appears before the crystal structure changes from As type (Sb) to α-Po type. Superconductivity is observed in the β-Po-type structure as well as in the α-Po-type structure. Tc increases with decreasing Te concentration toward the Te-free Au-Sb end of the diagram. A Tc of 8.1 K was achieved for the Au-Sb alloy with a typical composition of Au 0.15Sb0.85. This Tc value is the highest among materials with the α-Po-type structure under ambient pressure. Our Au 0.125Sb0.75Te0.125 sample exhibits a weak metallic behavior in resistivity. The discrepancy in the normal state resistivity behaviors between the previous study and ours must originate from a difference in the number of lattice defects in the samples. © 2014 IOP Publishing Ltd. | en_US |
dc.language.iso | en | en_US |
dc.source | Superconductor Science and Technology | en_US |
dc.subject | Ambient pressures | en_US |
dc.subject | High-pressure synthesis | en_US |
dc.subject | Metallic behaviors | en_US |
dc.subject | Normal state resistivity | en_US |
dc.subject | Rhombohedral structures | en_US |
dc.subject | Simple cubic | en_US |
dc.subject | Tc variation | en_US |
dc.subject | Ternary alloy systems | en_US |
dc.subject | Antimony | en_US |
dc.subject | Gold | en_US |
dc.subject | Phase diagrams | en_US |
dc.subject | Superconductivity | en_US |
dc.subject | Tellurium | en_US |
dc.subject | Tellurium compounds | en_US |
dc.subject | Temperature | en_US |
dc.subject | Ternary alloys | en_US |
dc.subject | Crystal structure | en_US |
dc.title | Superconductivity at the highest transition temperature of 8.1 K in a simple cubic AuxSb1-x-yTey alloy system synthesized under high pressure | en_US |
dc.type | Journal Article | en_US |
Appears in Collections: | Department of Metallurgical Engineering and Materials Sciences |
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