Journal of Magnetism and Magnetic Materials 290-291, 1134 (2005)
Proceedings of the Joint European Magnetic Symposia (JEMS’ 04)
A. Bollero, M. Ziese, P. Esquinazi, K. Dörr and I. Mönch
Abstract
An epitaxial magnetite (Fe3O4) film has been deposited by the pulsed laser deposition (PLD) technique on a bicrystal substrate. Magnetoresistance measurements on patterned stripes (width=20 μm) across the bicrystal grain boundary have not revealed a distinguishable grain boundary contribution. Post-annealing of the film has a strong influence on the relaxation degree of the film and on the density of antiphase boundaries. Magnetotransport measurements of the micrometer-patterned annealed film show significantly enlarged high-field magnetoresistance values at low temperatures.
