A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Growth Condition Dependence of Microcracks in YBCO Thin Films Pulsed Laser Deposited on NdGaO3 (001) Substrates
Tekijät: Palonen H, Huhtinen H, Paturi P
Kustantaja: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Julkaisuvuosi: 2015
Journal: IEEE Transactions on Applied Superconductivity
Tietokannassa oleva lehden nimi: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Lehden akronyymi: IEEE T APPL SUPERCON
Artikkelin numero: ARTN 6600604
Vuosikerta: 25
Numero: 3
Sivujen määrä: 4
ISSN: 1051-8223
eISSN: 1558-2515
DOI: https://doi.org/10.1109/TASC.2014.2365407
Tiivistelmä
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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