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Ablation laser fluence as an effective parameter to control superconductivity in Ba1-xKxBiO3 films

Title
Ablation laser fluence as an effective parameter to control superconductivity in Ba1-xKxBiO3 films
Authors
Lee, HodongKim, MinuKorneta, O. B.Lee, ShinbuhmNoh, Tae Won
DGIST Authors
Lee, Shinbuhm
Issue Date
2017-05
Citation
Current Applied Physics, 17(5), 600-604
Type
Article
Article Type
Article
Keywords
Bulk Phase DiagramsCation StoichiometryDepositionDepositionEffective ParametersElectrical PropertiesEpitaxyGrowthLaser FluenceLaser FluencesOxide FilmsPerovskitePerovskite Oxide Thin FilmPerovskite Oxide Thin FilmsPerovskite Solar CellsPotassium ConcentrationsProgrammable Logic ControllersPulsed Laser Deposition TechniquePulsed Laser DepositionPulsed LasersSemiconductor DopingStoichiometryStoichiometrySuperconducting FilmsSuperconducting PropertiesSuperconducting Transition TemperatureSuperconductivitySystemTemperatureThin FilmsThin FilmsTransition
ISSN
1567-1739
Abstract
Potassium doping in insulating BaBiO3 induces superconductivity, with high superconducting transition temperatures, Tc, of up to 31 K in bulk. We investigated growth control of superconducting properties of BKBO films, by varying laser fluence using pulsed laser deposition technique. As cation stoichiometry, especially potassium concentration in BKBO films, was sensitively changed with laser fluence, we were able to precisely control Tc of BKBO films. Following the trend of the bulk phase diagram, Tc showed the highest value of 24.5 ± 0.5 K at the optimal stoichiometry. This result can provide optimal guidance for the synthesis of high-quality BKBO films, and demonstrates the effectiveness of laser fluence to study emerging superconducting phenomena in PLD-grown complex oxide thin films. © 2017 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/4183
DOI
10.1016/j.cap.2017.02.014
Publisher
Elsevier B.V.
Files:
There are no files associated with this item.
Collection:
ETC1. Journal Articles
Emerging Materials ScienceETC1. Journal Articles


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