Physics – General Physics
Scientific paper
2011-03-22
Physics
General Physics
Based on the material published in Fundamentals of Solid-State Phase Transitions, Ferromagnetism and Ferroelectricity, 2nd Ed.
Scientific paper
The cause of magnetostriction is revealed by analyzing this phenomenon in a polydomain crystal of Fe. It is based on the two fundamentals: (a) magnetization is a rearrangement of spins by rearrangement of the crystal structure, and (b) the {\alpha}-Fe has a tetragonal rather than cubic structure. The magnetostriction results from the structural rearrangement, induced by application of magnetic field. that makes the direction of longer crystallographic axis of the participated domains coincide with, or become closer to, the direction of the applied magnetic field.
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