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Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
Published on: November 7, 2017
Magnetic flux density measurements from narrow grain boundaries produced in sintered permanent magnets
Youngji Cho1, Sujin Lee2, Yasukazu Murakami1,2
1The Ultramicroscopy Research Center, Kyushu University, Fukuoka 819-0395, Japan.
Abstract:
This review examines methods of magnetic flux density measurements from the narrow grain boundary (GB) regions, the thickness of which is of the order of nanometers, produced in Nd-Fe-B-based sintered magnets. Despite of the complex crystallographic microstructure and the significant stray magnetic field of the sintered magnet, recent progress in electron holography allowed for the determination of the intrinsic magnetic flux density due to the GB which is embedded in the polycrystalline thin-foil. The methods appear to be useful as well for intensive studies about interface magnetism in a variety of systems.
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