Negative magnetization of Li2Ni2Mo3O12 having a spin system composed of distorted honeycomb lattices and linear chains

Abstract

We study themagnetism of a spin-1 substance Li2Ni2Mo3O12. The spin system consists of distorted honeycomb lattices and linear chains of Ni2+ spins. Li+ ions enter about 25% and 50% of the honeycomb and chain Ni sites, respectively, creating disorder in both spin subsystems. A magnetic phase transition occurs at Tc = 8.0 K in the zero magnetic field. In low magnetic fields, the magnetization increases rapidly below Tc, decreases below 7 K, and finally becomes negative at low temperatures. We determine the magnetic structure using neutron powder diffraction results. The honeycomb lattices and linear chains show antiferromagnetic and ferromagnetic long-range order, respectively. We investigate static and dynamic magnetic properties using the local probe technique of muon spin relaxation. We discuss the origin of the negative magnetization.

References in corpus (7)

• Observation of tunable exchange bias in Sr${}_2$YbRuO${}_6$
• Cooperative ordering of gapped and gapless spin networks in Cu${}_2$Fe${}_2$Ge${}_4$O${}_{13}$
• Successive phase transitions to antiferromagnetic and weak-ferromagnetic long-range orders in quasi-one-dimensional antiferromagnet Cu${}_3$Mo${}_2$O${}_9$
• Observation of magnetization reversal and negative magnetization in a double perovskite compound Sr2YbRuO6
• Magnetic excitations in weakly coupled spin dimers and chains material Cu2Fe2Ge4O13
• Indirect magnetic interaction mediated by spin dimer in Cu${}_2$Fe${}_2$Ge${}_4$O${}_{13}$
• Exchange bias-like magnetic properties in Sr2LuRuO6

Cited by in corpus (1)

• Role of local short-scale correlations in the mechanism of negative magnetization