A1 Refereed original research article in a scientific journal
Growth Condition Dependence of Microcracks in YBCO Thin Films Pulsed Laser Deposited on NdGaO3 (001) Substrates
Authors: Palonen H, Huhtinen H, Paturi P
Publisher: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication year: 2015
Journal: IEEE Transactions on Applied Superconductivity
Journal name in source: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Journal acronym: IEEE T APPL SUPERCON
Article number: ARTN 6600604
Volume: 25
Issue: 3
Number of pages: 4
ISSN: 1051-8223
eISSN: 1558-2515
DOI: https://doi.org/10.1109/TASC.2014.2365407
Abstract
The high-temperature superconductor YBCO is typically used as a thin film or coating in applications, but the brittle YBCO layer is often prone to develop small cracks, which reduce its performance. To better understand the crack formation and its connection to the uniaxial twinning state of YBCO on NdGaO3 (001) substrates, a series of YBCO thin films has been grown by pulsed laser deposition with varying deposition temperature and growth rate. The structural properties of the samples are analyzed by atomic force microscopy and X-ray diffraction. The crack formation reduces the critical current densities, which have been measured magnetically. The results show a significant decrease in crack formation with decreased deposition temperature and also with decreased growth rate.
The high-temperature superconductor YBCO is typically used as a thin film or coating in applications, but the brittle YBCO layer is often prone to develop small cracks, which reduce its performance. To better understand the crack formation and its connection to the uniaxial twinning state of YBCO on NdGaO3 (001) substrates, a series of YBCO thin films has been grown by pulsed laser deposition with varying deposition temperature and growth rate. The structural properties of the samples are analyzed by atomic force microscopy and X-ray diffraction. The crack formation reduces the critical current densities, which have been measured magnetically. The results show a significant decrease in crack formation with decreased deposition temperature and also with decreased growth rate.
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