Please use this identifier to cite or link to this item: https://dspace.iiti.ac.in/handle/123456789/7700
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dc.contributor.authorShirage, Parasharam Marutien_US
dc.date.accessioned2022-03-17T01:00:00Z-
dc.date.accessioned2022-03-21T11:12:34Z-
dc.date.available2022-03-17T01:00:00Z-
dc.date.available2022-03-21T11:12:34Z-
dc.date.issued2014-
dc.identifier.citationIyo, 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:10.1088/0953-2048/27/2/025005en_US
dc.identifier.issn0953-2048-
dc.identifier.otherEID(2-s2.0-84892579741)-
dc.identifier.urihttps://doi.org/10.1088/0953-2048/27/2/025005-
dc.identifier.urihttps://dspace.iiti.ac.in/handle/123456789/7700-
dc.description.abstractWe 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.isoenen_US
dc.sourceSuperconductor Science and Technologyen_US
dc.subjectAmbient pressuresen_US
dc.subjectHigh-pressure synthesisen_US
dc.subjectMetallic behaviorsen_US
dc.subjectNormal state resistivityen_US
dc.subjectRhombohedral structuresen_US
dc.subjectSimple cubicen_US
dc.subjectTc variationen_US
dc.subjectTernary alloy systemsen_US
dc.subjectAntimonyen_US
dc.subjectGolden_US
dc.subjectPhase diagramsen_US
dc.subjectSuperconductivityen_US
dc.subjectTelluriumen_US
dc.subjectTellurium compoundsen_US
dc.subjectTemperatureen_US
dc.subjectTernary alloysen_US
dc.subjectCrystal structureen_US
dc.titleSuperconductivity at the highest transition temperature of 8.1 K in a simple cubic AuxSb1-x-yTey alloy system synthesized under high pressureen_US
dc.typeJournal Articleen_US
Appears in Collections:Department of Metallurgical Engineering and Materials Sciences

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