ISSN:
1608-3172
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Data are presented on the correlations between the angle the magnetization vector makes with the normal to the surface (θ) and the surface conductivity (σs) and activation energy for conduction in Mn p Mg q Fe3 – p – q O4 + γ epilayers. The orientation of the magnetic moment and the effective magnetic fields at Fe nuclei on tetrahedral and octahedral sites were determined by Mössbauer spectroscopy. It is shown that θ increases with σs 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+.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1026637832719
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