Magnetic Property and Morphology of Fe Film Grown on Self-Organized SrTiO3 (001) Substrate with Inclined Angle

Gyu Bong Cho, Masahiko Yamamoto, Yasushi Endo, Yu Shiratsuchi, Yasuhiro Kamada, Katsuaki Sato

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Five-nanometer-thick Fe film has been grown on self-organized SrTiO 3(001) substrate with an inclined angle (a). The morphology of Fe film was investigated by scanning tunneling microscopy (STM). Dependence of the magnetic property on the inclined angle was revealed by magneto-optic Kerr effect (MOKE) measurement. In the morphology of Fe film, the surface structure of Fe films is reflected in the features of substrates and their morphologies are affected by the inclined angle of the substrates: a random distribution for smaller angles and a wirelike array for larger angles. The details including the shape, size and height of the clusters are described for different inclined angles. The crystalline orientational relationship between Fe and SrTiO 3 is Fe(001)[110]∥SrTiO3(001)[100]. In the magnetic property of the Fe film, the magnetocrystalline anisotropy governs the magnetic property in the flat surface, while a magnetic uniaxial anisotropy and a magnetocrystalline anisotropy govern it in the substrate with larger angles. The magnetic uniaxial anisotropy is enhanced by the step structure on the inclined substrate. It is clearly shown that the magnetic property of 5-nm-thick Fe films are affected by their morphology.

Original languageEnglish
Pages (from-to)6543-6550
Number of pages8
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume42
Issue number10
Publication statusPublished - 2003 Oct 1
Externally publishedYes

Keywords

  • Fe
  • Inclined substrate
  • MBE
  • MOKE
  • Magnetic property
  • RHEED
  • STM
  • Self-organization
  • SrTIO
  • Thin film

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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