An insight into spin-chain magnetism through Moessbauer spectroscopic investigations in Eu-doped Ca3Co2O6 and Ca3CoRhO6

Abstract

We report the results of 151Eu Moessbauer effect and magnetization measurements in the Eu-doped Ca3Co2O6 and Ca3CoRhO6, which are of great current interest in the fields of spin-chain magnetism and geometrical frustration. We find that there is a pronounced increase in the line-width of the Moessbauer spectra below a certain characteristic temperature which is well-above the one at which three-diensional ordering features set in. This unusual broadening of the spectra indicates the existence of a characteristic temperature in these 'exotic' magnetic systems, attributable to the onset of incipient one-dimensional magnetic order. This is inferred from an intriguing correlation of this characteristic temperature with the paramagnetic Curie temperature (a measure of intrachain coupling strength in these cases).

References in corpus (10)

• Magnetic properties of alpha-iron(II) phthalocyanine
• Magnetic behavior of Co ions in the exotic spin-chain compound,Ca3Co2O6, from 59Co NMR studies
• Superparamagnetic-like ac susceptibility behavior in a "partially disordered antiferromagnetic" compound, Ca${}_3$CoRhO${}_6$
• Magnetic behaviour of quasi-one-dimensional oxides, Ca${}_3$Co${}_{(}1+x)$Mn${}_{1-x}$O${}_6$
• 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
• Insulating state and the importance of the spin-orbit coupling in Ca${}_3$CoRhO${}_6$
• Heat-capacity anomalies in the presence of high magnetic fields in the spin-chain compound, Ca3Co2O6
• Negative chemical pressure effects induced by Y substitution for Ca on the exotic magnetic behavior of spin-chain compound, Ca3Co2O6
• Effect of a small disruption of the Ca site on the geometrically frustrated magnetic behavior of Ca3CoRhO6

Cited by in corpus (11)

• Spin correlations in Ca3Co2O6: A polarised-neutron diffraction and Monte Carlo study
• Magnetic behavior of nano crystals of a spin-chain system, Ca3Co2O6: Absence of multiple steps in the low temperature isothermal magnetization
• Anisotropic magnetodielectric coupling behavior of Ca3Co1.4Rh0.6O6 due to geometrically frustrated magnetism
• One-Dimensional Dispersive Magnon Excitation in the Frustrated Spin-2 Chain System Ca3Co2O6
• Dimensionality, nematicity and Superconductivity in Fe-based systems
• Anomalies in the core level spectroscopy of a noncentrosymmetric solid, BiPd
• Modifications in the frustrated magnetism, oxidation state of Co and magnetoelectric coupling effects induced by a partial replacement of Ca by Gd in the spin chain compound Ca3Co2O6
• Ferroelectricity of structural origin in spin-chain compounds Ca${}_3$Co${}_{2-x}$Mn${}_x$O${}_6$
• Stability of geometrically frustrated magnetic state of Ca3CoRhO6 to applications of positive and negative pressure
• Magnetic anomalies in nanocrystalline Ca3CoRhO6, a geometrically frustrated spin-chain compound,
• Observation of Griffiths-like phase in the quaternary Heusler compound NiFeTiSn