Magnetostrictive Property and Magnetic Domain Structure of Fe-Ga Alloy Single Crystal under Tensile Strain

Shun Fujieda; Shimpei Asano; Shunichiro Hashi; Kazushi Ishiyama; Tsuguo Fukuda; Shigeru Suzuki

doi:10.4028/www.scientific.net/MSF.941.914

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HomeMaterials Science ForumMaterials Science Forum Vol. 941Magnetostrictive Property and Magnetic Domain...

Magnetostrictive Property and Magnetic Domain Structure of Fe-Ga Alloy Single Crystal under Tensile Strain

Abstract:

The saturation value of the magnetostriction curve in the [100] direction of a Fe-Ga alloy single crystal was decreased from 226 to 55 ppm by applying the tensile strain of 533 ppm to the measured direction. By magnetic domain observation using a magneto-optic Kerr effect microscope, a complex structure composed of various magnetic domains was observed under zero applied strain. On the other hand, a stripe structure composed of magnetic domains with the magnetization direction in two kinds of <100> magnetic easy directions parallel to the tensile direction, which were separated by straight 180° domain walls, was observed under the tensile strain of 533 ppm. The characteristic magnetic domain structure due to the tensile strain was successfully observed as a cause of the significant decrease of the saturation value of the magnetostriction curve.

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Materials Science Forum (Volume 941)

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914-918

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https://doi.org/10.4028/www.scientific.net/MSF.941.914

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December 2018

Authors:

Shun Fujieda*, Shimpei Asano, Shunichiro Hashi, Kazushi Ishiyama, Tsuguo Fukuda, Shigeru Suzuki

Keywords:

Domain Wall, Inverse Magnetostrictive Effect, Magneto-Optic Kerr Effect Microscopy, Magnetostriction

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