Spin reorientation in tetragonally distorted spinel oxide epitaxial films

Hiroki Koizumi, Ikumi Suzuki, Daisuke Kan, Jun Ichiro Inoue, Yusuke Wakabayashi, Yuichi Shimakawa, Hideto Yanagihara

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We experimentally investigated the magnetic properties of epitaxial films known to be conductive oxides with perpendicular magnetic anisotropy (PMA) at room temperature. Both magnetotorque and magnetization measurements at various temperatures provide clear experimental evidence of the spin reorientation transition at which the MA changes from PMA to easy-cone magnetic anisotropy (ECMA) at a certain temperature (). ECMA was commonly observed in films grown by pulsed laser deposition and reactive radio frequency magnetron sputtering, although is dependent on the growth method as well as the conditions. The cone angles measured from the axis increased successively at and approached a maximum of 45-50 degrees at the lowest measurement temperature of 5 K. Calculation with the cluster model suggests that the ions occupying the site could be the origin of the ECMA. Both the magnetic properties and the results of the calculation based on the cluster model indicate that the ECMA is attributable to the cation antisite distribution of , which is possibly formed during the growth process of the thin films.

Original languageEnglish
Article number014422
JournalPhysical Review B
Issue number1
Publication statusPublished - 2021 Jul 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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