Magnetic structures of fcc systems with nearest-neighbor and next-nearest-neighbor exchange interactions

Abstract

The nature of the relationship of the magnetic structure in fcc systems to the values of ${J}_{1}$ and ${J}_{2}$, the nearest-neighbor and next-nearest-neighbor exchange interactions respectively, is examined. Fifteen experimental systems, with ordering varying from ferromagnetism to three different kinds of antiferromagnetism (AFI, AFII, AFIII), fit the predictions of the ter Haar-Lines model. Several other fcc systems where the exchange interactions need to be known more accurately for comparison with the model are noted.