Investigations on the domain structure in hematite by means of the electron beam method

Abstract

Shadow patterns have been obtained from crystals of hematite using the electron beam technique. These patterns possess shadow-edge features which are shown to be consistent with that to be expected from a domain structure. In many of the crystals examined the features disappear on cooling at about -15 degrees C and reappear on heating. In a number of cases of crystals containing relatively large amounts of impurities, particularly titanium, the shadow-edge features either do not change, or disappear only at appreciably lower temperatures.