Surface morphology of laser deposited YBa2Cu3Oy films

Andrianov, D. G.; Klimonsky, S. O.; Kusikov, V.A.; Лубнин, Е. Н.

doi:10.1016/0921-4534(94)91511-3

Cited by 1 publication

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“…As a result, this aspect remains a topic of current interest. Among the various processing conditions, the substrate temperature is one of the most important parameters governing the crystallization process [3,4]. It influences the mobility of deposits across the substrate which in turn affects the nucleation and growth processes.…”

Section: Introductionmentioning

confidence: 99%

Substrate temperature dependence of the texture quality in YBCO thin films fabricated by on-axis pulsed-laser ablation

Low

Ong

et al. 1997

Supercond. Sci. Technol.

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In applications of superconducting devices, the crystalline texture of high-quality YBa 2 Cu 3 O 7−x thin films is of primary importance. The preferred orientation of the films can be essentially controlled by means of the substrate temperature, T s . In order to study the dependence of the film texture on different T s , a series of films were deposited on YSZ substrates by the on-axis pulsed-laser ablation technique. The substrate temperature was varied from 600 • C to 800 • C while the rest of the growth parameters remained the same. Various analytical techniques, including x-ray diffraction, scanning electron microscopy, micro-Raman spectroscopy and the four-point probe method, were applied to characterize the films. At around T s = 700 • C, the best films with the smoothest surface morphology, lowest FWHM of the rocking curve and highest in-plane texture were obtained. The resultant J c in excess of 1 × 10 6 A cm −2 at 77 K and T c around 91 K were also achieved at this temperature.

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Section: Introductionmentioning

confidence: 99%