Characterization of a Co-CoO Obliquely Evaporated Magnetic Tape by Analytical Electron Microscopy and Electron Holography

Daisuke Shindo, Masasuke Hosokawa, Zheng Liu, Yasukazu Murakami, Takuya Ito, Yoh Iwasaki, Junichi Tachibana

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The microstructure and magnetic domain structure of a Co-CoO obliquely evaporated tape for magnetic recording are studied by analytical electron microscopy and electron holography, respectively. While the existence of Co and CoO crystallites is confirmed by energy-filtered electron diffraction, columnar structure of the Co crystallites surrounded by the densely packed CoO crystallites is visualized by an elemental mapping method with electron energy loss spectroscopy, and the crystal orientation relation among the Co crystallites is clarified by high-resolution electron microscopy. It is found that the neighboring Co crystallites have close crystal orientations. On the other hand, electron holography reveals the magnetic flux distribution in a thin section of the tape. Although there exists the background resulting from the effect of inner potential with thickness variation, the distribution of lines of magnetic flux is found to correspond well to the recorded pattern.

Original languageEnglish
Pages (from-to)116-121
Number of pages6
JournalMicroscopy and Microanalysis
Volume10
Issue number1
DOIs
Publication statusPublished - 2004 Feb 1

Keywords

  • Electron holography
  • Magnetic domain
  • Magnetic recording
  • Microstructure

ASJC Scopus subject areas

  • Instrumentation

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