@article{Shi:2012:10.1021/nn301262t,
author = {Shi, Y and Hasan, T and Babu, NH and Torrisi, F and Milana, S and Ferrari, AC and Cardwell, DA},
doi = {10.1021/nn301262t},
journal = {ACS Nano},
pages = {5395--5403},
title = {Synthesis of YBa2Cu3O(7-δ) and Y2BaCuO5 nanocrystalline powders for YBCO superconductors using carbon nanotube templates.},
url = {http://dx.doi.org/10.1021/nn301262t},
volume = {6},
year = {2012}
}

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TY  - JOUR
AB  - We fabricate nanosized superconducting YBa(2)Cu(3)O(7-δ) (Y-123) and nonsuperconducting Y(2)BaCuO(5) (Y-211) powders using carbon nanotubes as template. The mean particle size of Y-123 and Y-211 is 12 and 30 nm, respectively. The superconducting transition temperature of the Y-123 nanopowder is 90.9 K, similar to that of commercial, micrometer-scale powders fabricated by conventional processing. The elimination of carbon and the formation of a high purity superconducting phase both on the micro- and macroscale is confirmed by Raman spectroscopy and X-ray diffraction. We also demonstrate improvement in the superconducting properties of YBCO single grain bulk samples fabricated using the nanosize Y-211 powder, both in terms of trapped field and critical current density. The former reaches 553 mT at 77 K, with a ∼20% improvement compared to samples fabricated from commercial powders. Thus, our processing method is an effective source of pinning centers in single grain superconductors.
AU  - Shi,Y
AU  - Hasan,T
AU  - Babu,NH
AU  - Torrisi,F
AU  - Milana,S
AU  - Ferrari,AC
AU  - Cardwell,DA
DO  - 10.1021/nn301262t
EP  - 5403
PY  - 2012///
SN  - 1936-086X
SP  - 5395
TI  - Synthesis of YBa2Cu3O(7-δ) and Y2BaCuO5 nanocrystalline powders for YBCO superconductors using carbon nanotube templates.
T2  - ACS Nano
UR  - http://dx.doi.org/10.1021/nn301262t
UR  - https://www.ncbi.nlm.nih.gov/pubmed/22642322
VL  - 6
ER  - 

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