Abstract
The microstructure, orientation and magnetostrictive properties of a Fe81Ga19 polycrystal grown by Bridgman method were investigated. A big central single crystal surrounded by some small crystals was observed. Laue X-ray back-reflection confirmed the orientation of the central crystal and deviation from the direction for the edge crystals. Subgrain boundaries were monitored in the crystal. It was confirmed that orientations of all the subgrains were very close to the direction. Measurement of the magnetostriction in different crystals indicated the strong anisotropy of the magnetostrictive properties. This work opens the possibility of preparing large-sized single crystal of FeGa alloys by using the Bridgman method.
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