Magnetic Structure of NiCr₂O₄Studied by Neutron Scattering and Magnetization Measurements

Competing Jahn-Teller distortions and ferrimagnetic ordering in the geometrically frustrated systemNi1−xCuxCReehuis1, Tovar2, Többens3 et al. 2015Phys. Rev. B3710450View full textAdd to dashboardCite

“…The transition temperatures observed in this work are in good agreement with those given earlier. 20,22,23,25 In order to investigate in detail the magnetic phase transitions of NiCr2O4, Ni0.85Cu0.15Cr2O4, and Ni0.80Cu0.20Cr2O4 we have followed the temperature dependence of particular magnetic reflections (Fig. 6).…”

“…18,25,28 The magnetic moments of NiCr2O4 are composed of a ferrimagnetic (longitudinal) and antiferromagnetic (transverse component, where the magnetic structures were described by the propagation vectors k1 = 0 and k2 = (0,0,1), respectively. However two different types of spin structures presented in Refs.…”

Effect of Fe Substitution on Structural and Magnetic Properties of NiCr2O4

“…A second distortion within the orthorhombic structure occurs in the region of 30 K, with significant anomalies observed in both magnetic susceptibility and heat capacity measurements [8]. Neutron diffraction studies confirm the ordering of the longitudinal ferrimagnetic component at 60 K, and the ordering of the transverse antiferromagnetic component at 30 K [1]. Specific heat measurements demonstrate two additional anomalies other than 310 K, one near 70 K and the other at 29 K both due to magneto-structural coupling [9].…”

“…NiCr 2 O 4 and NiFe 2 O 4 ferrimagnets crystallizes into normal and inverse spinel structures respectively with magnetic Ni 2 ion occupying tetrahedral site in the former and octahedral site in the latter [1,2]. Cr ions occupy tetrahedral site and the rest occupy octahedral site [2].…”

Controlling spin ordering in frustrated magnets via thin film heteroepitaxy

“…Of particular interest are spinel structure compounds with magnetic cations. The chromite spinels (ACr 2 O 4 ) display magnetic ground states that range from highly frustrated systems like canonical geometrically frustrated magnets 1 to those with reduced frustation such as non-collinear spin systems that exhibit helicoidal [2][3][4] and triangular, canted 5,6 order. Theoretical studies have focused on their spin ordering stability, 7 and experimental studies have uncovered spin-lattice coupling, 8 multiferroicity, 9-11 and magnetism-induced anisotropic lattice dynamics.…”