Magnetic microstructure and electrical properties of ferrimagnetic oxide epilayersстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Data are presented on the correlations between the angle the magnetization vector makes with the normal to the surface (theta) and the surface conductivity (sigma (s)) and activation energy for conduction in MnpMgqFe3-p-qO4+gamma epilayers. The orientation of the magnetic moment and the effective magnetic fields at Fe nuclei on tetrahedral and octahedral sites were determined by Mossbauer spectroscopy. It is shown that theta increases with sigma (s) and, according to x-ray diffraction data, depends on the density of misfit dislocations. The revealed correlations are interpreted in terms of epilayer microstructure, electronic-ionic disordering, lattice mismatch, and Jahn-Teller effect. The development of uniaxial anisotropy in the layers studied is due to the presence of the Jahn-Teller ion Mn3+, rather than Fe2+.