Microstructure refinement and enhanced critical current density in binary doped SmFeAsO superconductor

Journal Article · Thu Apr 24 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4873024· OSTI ID:22269356

Anooja, J. B.; Aswathy, P. M.; Varghese, Neson; Aloysius, R. P. ^[1]

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1. National Physical Laboratory (CSIR), Delhi-110012 (India)

The iron-pnictide Sm{sub 1−x}Ca{sub x}FeAsO{sub 1−2x}F{sub 2x} superconductor was prepared and the combined effect of electron and hole doping was studied in detail. It is observed that the binary doping using CaF{sub 2} improves the microstructure tremendously with a preferred orientation of the (00l) planes. Moreover, a maximum T{sub C} of 53.8 K and a transport J{sub C} of 880 A/cm{sup 2} (12 K), which is double to that of the F-doped sample, are achieved. The dopant CaF{sub 2} seems to be a potential candidate for solving the grain-connectivity concerns in iron-pnictides paving the way towards conductor development.

• OSTI ID: 22269356
• Journal Information: AIP Conference Proceedings, Vol. 1591, Issue 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CALCIUM FLUORIDES
CRITICAL CURRENT
CURRENT DENSITY
DOPED MATERIALS
GRAIN ORIENTATION
IRON
PNICTIDES
SUPERCONDUCTORS