Superconducting and structural properties of Nd2-xCe xCuO4-y thin films on perovskite and fluorite substrates

S. N. Mao, X. X. Xi, Qi Li, T. Venkatesan, D. Prasad Beesabathina, L. Salamanca-Riba, X. D. Wu

Research output: Contribution to journalArticle

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Abstract

High quality epitaxial Nd2-xCexCuO4-y (NCCO) thin films were fabricated on various substrates by pulsed-laser deposition using N2O reactive gas. The similarities and dissimilarities of the superconducting and structural properties of NCCO films, on perovskite-type substrates such as LaAlO3, NdGaO3, and SrTiO3 and on a fluorite-type substrate of yttria-stabilized zirconia (YSZ), were investigated systematically as a function of film thickness by transport measurements and structural analysis. A remarkable reduction of T c was observed when the film was thinner than a critical thickness, which strongly depends on the substrate. The critical thicknesses for which Tc is 80% of Tc max are 1200, 1000, 600, and 450 Å for LaAlO3, NdGaO3, SrTiO3, and YSZ, respectively. YSZ turns out to be the best candidate for the growth of very thin NCCO films among the substrates studied. These results show a strong correlation between the strain and Tc in NCCO thin films and point the way to the fabrication of n-type superconducting electric field devices using ultrathin NCCO films.

Original languageEnglish (US)
Pages (from-to)2119-2124
Number of pages6
JournalJournal of Applied Physics
Volume75
Issue number4
DOIs
StatePublished - Dec 1 1994

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fluorite
yttria-stabilized zirconia
thin films
structural analysis
pulsed laser deposition
film thickness
fabrication
electric fields
gases

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Mao, S. N., Xi, X. X., Li, Q., Venkatesan, T., Beesabathina, D. P., Salamanca-Riba, L., & Wu, X. D. (1994). Superconducting and structural properties of Nd2-xCe xCuO4-y thin films on perovskite and fluorite substrates. Journal of Applied Physics, 75(4), 2119-2124. https://doi.org/10.1063/1.356318
Mao, S. N. ; Xi, X. X. ; Li, Qi ; Venkatesan, T. ; Beesabathina, D. Prasad ; Salamanca-Riba, L. ; Wu, X. D. / Superconducting and structural properties of Nd2-xCe xCuO4-y thin films on perovskite and fluorite substrates. In: Journal of Applied Physics. 1994 ; Vol. 75, No. 4. pp. 2119-2124.
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Mao, SN, Xi, XX, Li, Q, Venkatesan, T, Beesabathina, DP, Salamanca-Riba, L & Wu, XD 1994, 'Superconducting and structural properties of Nd2-xCe xCuO4-y thin films on perovskite and fluorite substrates', Journal of Applied Physics, vol. 75, no. 4, pp. 2119-2124. https://doi.org/10.1063/1.356318

Superconducting and structural properties of Nd2-xCe xCuO4-y thin films on perovskite and fluorite substrates. / Mao, S. N.; Xi, X. X.; Li, Qi; Venkatesan, T.; Beesabathina, D. Prasad; Salamanca-Riba, L.; Wu, X. D.

In: Journal of Applied Physics, Vol. 75, No. 4, 01.12.1994, p. 2119-2124.

Research output: Contribution to journalArticle

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