Magnetism of the antiferromagnetic spin-3/2 dimer compound CrVMoO7 having an antiferromagnetically ordered state Public Deposited
We measured magnetization, specific heat, electron spin resonance, neutron diffraction, and inelastic neutron scattering of CrVMoO7 powder. An antiferromagnetically ordered state appears below TN = 26.5 ± 0.8 K. We consider that the probable spin model for CrVMoO7 is an interacting antiferromagnetic spin- 3/2 dimer model. We evaluated the intradimer interaction J to be 25 ± 1 K and the effective interdimer interaction Jeff to be 8.8 ±1 K. CrVMoO7 is a rare spin dimer compound that shows an antiferromagnetically ordered state at atmospheric pressure and zero magnetic field. The magnitude of ordered moments is 0.73(2)μB. It is much smaller than a classical value ∼3μB. Longitudinal-mode magnetic excitations may be observable in single crystalline CrVMoO7.