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Growth of a-axis-oriented HgBa2CaCu2Ox thin films by rapid quenching
KTH, School of Information and Communication Technology (ICT). (Materialfysik)
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1999 (English)In: Journal of Materials Research, ISSN 0884-2914, E-ISSN 2044-5326, Vol. 14, no 8, 3181-3184 p.Article in journal (Refereed) Published
Abstract [en]

High-quality a-axis-oriented HgBa2CaCu2Ox superconducting thin films have been grown on (100) LaAlO3 substrates using a modified conventional method that contains a short annealing time of 5 min, rapid-quenching process, and an alternative encapsulated approach. We found that the preferred orientations of HgBa2CaCu2Ox thin films can be controlled by rapid quenching at specific temperatures: 800, 700, 600, and 500 degrees C. The films rapidly quenched in water from 700 degrees C during a cooling cycle showed predominantly a-axis orientation perpendicular to the film surface. Phase was confirmed by x-ray diffraction pole figures. The a-axis films exhibited a zero-resistance transition temperature >120 K, which is comparable to epitaxial c-axis-oriented films.

Place, publisher, year, edition, pages
1999. Vol. 14, no 8, 3181-3184 p.
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Natural Sciences
Identifiers
URN: urn:nbn:se:kth:diva-84725DOI: 10.1557/JMR.1999.0426ISI: 000082550800001OAI: oai:DiVA.org:kth-84725DiVA: diva2:499565
Note
NR 20140805Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2017-12-07Bibliographically approved

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