Thermochemical Etching Reveals Domain Structure in Magnetite

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Science  16 Oct 1964:
Vol. 146, Issue 3642, pp. 398-399
DOI: 10.1126/science.146.3642.398


Single crystals of magnetite were prepared for study of the magnetic domain structure by etching in a molten mixture of boron oxide and lead oxide. The domain pattern on a (110) surface shows 71°, 109°, and 180° Bloch walls. The intensity of remanent magnetization is much less than the saturation value.