Antiferromagnetic Arrangements in Ferrites

Enhanced magnetization of CuCr2O4 thin films by substrate-induced strain

“…The severe distortion of CuCO, which has a 20% greater c/a ratio than inverse spinel CuFe 2 O 4 (c/a = interactions as proposed by the Néel model of collinear moments 5,6 . Instead the distortion results in all three interactions being comparable in energy as proposed by Yafet and Kittel 9 . Figure 1(b) illustrates the resultant moment configuration in bulk CuCO, consisting of one Cu 2+ (1 μ B ) and two Cr 3+ (3 μ B ) cations arranged in a frustrated triangle.…”

Structural, electrical and magnetic properties of cadmium substituted nickel–copper ferrites

“…The Cd 2+ ion strongly occupies the tetrahedral A-site [9,10], while Ni 2+ and Cu 2+ ions occupies the octahedral B-site [24] and Fe 3+ ions occupies both tetrahedral and octahedral site. The addition of cadmium a nonmagnetic divalent metal ion (Cd 2+ ion) content in ferrites reduces the amount of Ni 2+ ions and increases the amount of Fe 3+ ions in ferrites on B-site was responsible for the increase of saturation magnetization and magnetic moment, obeys Nell's two sub lattice model and it suggests the existence of canted spins giving rise to Y-K angles [39].…”

New physics in frustrated magnets: Spin ices, monopoles, etc. (Review Article)

“…This property of geometrically frustrated magnetic systems can be used for creation of refrigeration systems. In fact, geometrically frustrated magnetic systems had been studied earlier than the term "frustration" has been used [28,29,30]. For the review on frustrated spin systems, consult, e.g., the interesting books [31,32].…”