Canted Antiferromagnetism: Hematite

Hematite, the stable oxide of iron, is a major constituent of soils, rocks and the earth’s crust. It has unique magnetic properties that make it the prototype for the class of materials known as canted antiferromagnets. The mean-field theory is treated in detail and information obtained by a wide variety of experimental methods is provided. These techniques include x-ray and neutron diffraction; electron magnetic resonance; Mossbauer spectroscopy; and thermal, optical, electrical and elastic measurements.