Contamination of YBCO bulk superconductors by samarium and ytterbium

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00427134" target="_blank" >RIV/68378271:_____/14:00427134 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.physc.2013.04.084" target="_blank" >http://dx.doi.org/10.1016/j.physc.2013.04.084</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physc.2013.04.084" target="_blank" >10.1016/j.physc.2013.04.084</a>

Result language
angličtina
Original language name
Contamination of YBCO bulk superconductors by samarium and ytterbium
Original language description
Y?Ba?Cu?O (YBCO, Y-123) single-grain bulk superconductors with a nominal composition Y1.5Ba2Cu3Ox and 1 wt% CeO2 addition were prepared by the optimized Top-Seeded Melt-Growth process. Small single-crystalline pieces cut from the SmBa2Cu3Oy (Sm-123) bulkwere used for seeding of epitaxial growth. Wavelength-dispersive spectrometry (WDS) confirmed that prepared samples contain besides samarium from the seed also ytterbium from the substrate. The influence of maximum melting temperature, Tmax and dwell time on the contamination of the bulk samples was studied. Y2BaCuO5 (Y-211) barriers against samarium diffusion from the seed to melted sample were tested. Using a NdBa2Cu3Oz (Nd-123) seed and a combination of Y2O3 and Yb2O3 substrate led to a high critical temperature (Tc(50%) = 91.54 K) of prepared sample.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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