Stability of geometrically frustrated magnetic state of Ca3CoRhO6 to applications of positive and negative pressure

Abstract

The influence of negative chemical pressure induced by gradual replacement of Ca by Sr as well as of external pressure (up to 10 kbar) on the magnetism of Ca3CoRhO6 has been investigated by magnetization studies. It is found that the solid solution, Ca(3-x)Sr(x)CoRhO6, exists at least till about x= 1.0 without any change in the crystal structure. Apart from insensitivity of the spin-chain feature to volume expansion, the characteristic features of geometrical frustration interestingly appear at the same temperatures for all compositions, in sharp contrast to the response to Y substitution for Ca (reported previously). Interestingly, huge frequency dependence of ac susceptibility known for the parent compound persists for all compositions. We do not find a change in the properties under external pressure. The stability of the magnetic anomalies of this compound to the volume change (about 4%) is puzzling.

References in corpus (9)

• 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
• An insight into spin-chain magnetism through Moessbauer spectroscopic investigations in Eu-doped Ca3Co2O6 and Ca3CoRhO6
• Insulating state and the importance of the spin-orbit coupling in Ca${}_3$CoRhO${}_6$
• Long range magnetic ordering in a spin-chain compound, Ca${}_3$CuMnO${}_6$, with multiple bond distances
• Effect of a small disruption of the Ca site on the geometrically frustrated magnetic behavior of Ca3CoRhO6
• Magnetic ordering in trigonal chain compounds

Cited by in corpus (2)

• Anisotropic magnetodielectric coupling behavior of Ca3Co1.4Rh0.6O6 due to geometrically frustrated magnetism
• Magnetic anomalies in nanocrystalline Ca3CoRhO6, a geometrically frustrated spin-chain compound,