Growth of a-axis-oriented HgBa2CaCu2Ox thin films by rapid quenching
1999 (English)In: Journal of Materials Research, ISSN 0884-2914, Vol. 14, no 8, 3181-3184 p.Article in journal (Refereed) Published
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.
IdentifiersURN: urn:nbn:se:kth:diva-84725DOI: 10.1557/JMR.1999.0426ISI: 000082550800001OAI: oai:DiVA.org:kth-84725DiVA: diva2:499565
NR 201408052012-02-132012-02-132012-02-13Bibliographically approved