Influence of impurity of MgO substrates on properties of molecular beam epitaxy-grown superconducting NdBa2Cu3O 7-δ thin films

Shin Ichi Karimoto, Hisashi Sato, Toshiki Makimoto

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Abstract

We prepared various MgO substrates cut from various ingots with different impurity-Ca concentrations and deposited NdBa2Cu3O 7-δ (NBCO) thin-films on them by using molecular beam epitaxy (MBE). As a result, we found that the room temperature resistivity (ρ(RT)) of NBCO thin-films and the Ca concentration in an MgO substrate are quantitatively correlated. Moreover we clarified the permissible impurity-Ca concentration in MgO substrates in terms of practical microwave applications.

Original languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume45
Issue number12-16
DOIs
Publication statusPublished - 2006
Externally publishedYes

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Keywords

  • Impurity
  • MgO substrates
  • NdBaCuO thin films
  • RE-123 thin films
  • Resistivity
  • Superconducting thin films

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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