The antiferromagnetic insulator Ca3FeRhO6: characterization and electronic structure calculations

Abstract

We investigate the antiferromagnetic insulating nature of Ca3FeRhO6 both experimentally and theoretically. Susceptibility measurements reveal a Neel temperature T_N = 20 K, and a magnetic moment of 5.3 muB/f. u., while Moessbauer spectroscopy strongly suggests that the Fe ions, located in trigonal prismatic sites, are in a 3+ high spin state. Transport measurements display a simple Arrhenius law, with an activation energy of 0.2 eV. The experimental results are interpreted with LSDA band structure calculations, which confirm the Fe 3+ state, the high-spin/low-spin scenario, the antiferromagnetic ordering, and the value for the activation energy.

5 pages, 6 figures

References in corpus (5)

• Nature of magnetism in Ca${}_3$Co${}_2$O${}_6$
• The Origin of Magnetic Interactions in Ca3Co2O6
• Extended moment formation and magnetic ordering in the trigonal chain compound Ca3Co2O6
• Specific heat investigation of the magnetic ordering in two frustrated spin-chain oxides: Ca3Co2O6 and Ca3CoRhO6
• Evidence for the coexistence of low-dimensional magnetism and long-range order in Ca3CoRhO6

Cited by in corpus (1)

• $J_{eff}$ states in a quasi one dimensional antiferromagnetic spin chain hexagonal Iridates Sr${}_3$MIrO${}_6$ (M=Mg, Zn, Cd): an $ab-initio$ comparative perspective