Growth mechanism of nanorods in REBa2Cu3Oy films (RE: Rare-earth element)

A. Ichinose, H. Kai, Masashi Mukaida, S. Horii, R. Kita, K. Matsumoto, Y. Yoshida

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Critical current density under magnetic fields has been improved by the introduction of artificial pinning centers. Nanorods in REBa2Cu 3Oy films are significantly effective as c-axis-correlated pinning centers. However, nanorods sometimes tilt from the c-axis direction of superconducting films. To understand the mechanism of nanorod tilting, ErBa 2Cu3Oy films containing Ba(Nb 0.5Er0.5)O3 (BNO) nanorods were deposited on a SrTiO3 single crystal with a vicinal surface. Microstructures of the nanorods were examined by transmission electron microscopy (TEM). As a result, it was found that BNO nanorods grew diagonally from steps of the substrate surface in cross-sectional TEM images. The mechanism of the diagonal growth of nanorods can be explained by the segregation coefficient.

Original languageEnglish
Pages (from-to)2914-2918
Number of pages5
JournalJournal of Crystal Growth
Volume312
Issue number20
DOIs
Publication statusPublished - Oct 1 2010

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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