One step synthesis of SmO1-xFxFeAs bulks with Tc = 54.6 K: High upper critical field and critical current density

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dc.creatorMa, Yanwei
dc.creatorGao, Zhaoshun
dc.creatorWang, Lei
dc.creatorQi, Yanpeng
dc.creatorWang, Dongliang
dc.creatorZhang, Xianping
dc.date2008-06-17
dc.date.accessioned2026-07-07T12:43:53Z
dc.date.available2026-07-07T12:43:53Z
dc.descriptionA safe, simple and easily scaleable one-step sintering method is proposed to fabricate newly discovered superconductors of SmO1-xFxFeAs. Superconducting transition with the onset temperature of 54.6 K and high critical fields Hc2(0) >=200 T were confirmed in SmO1-xFxFeAs with x = 0.3. At 5 K and self field, critical current density Jc estimated from the magnetization hysteresis using the whole sample size and the average particle size reached 8.5x10^3 and 1.2x10^6 A/cm^2, respectively. Moreover, the Jc exhibited a very weak dependence on magnetic field. Microstructural characterizations revealed that the whole sample Jc improvement could be achieved by either perfect texture or optimization of fabrication process in this strongly-layered superconductor. Our results clearly demonstrated that one-step synthesis technique is unique and versatile and hence can be tailored easily for other rare earth derivatives of REFeAsO superconductors.
dc.description13 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0806.2839
dc.identifierhttp://arxiv.org/abs/0806.2839
dc.identifierCHIN. PHYS. LETT. Vol. 26, No. 3 (2009) 037401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220580
dc.subjectSuperconductivity
dc.titleOne step synthesis of SmO1-xFxFeAs bulks with Tc = 54.6 K: High upper critical field and critical current density
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