Evidence for the coexistence of low-dimensional magnetism and long-range order in Ca3CoRhO6

TL;DR

This study reveals that Ca3CoRhO6 exhibits both low-dimensional magnetic interactions and long-range magnetic order simultaneously, a novel coexistence in quasi-one-dimensional oxides, based on neutron diffraction data.

Contribution

It provides new experimental evidence of the coexistence of low-dimensional magnetism and long-range order in Ca3CoRhO6, expanding understanding of magnetic behaviors in quasi-one-dimensional materials.

Findings

Magnetic Bragg peaks appear below 100 K.

Diffuse magnetic peaks are observed both below and above 100 K.

Coexistence of low-dimensional magnetism with long-range order is demonstrated.

Abstract

We report the results of neutron powder diffraction studies on the spin-chain compound Ca3CoRhO6 in the temperature range 3 to 293 K. Bragg peaks due to magnetic ordering start appearing below about 100 K. The most interesting observation is that there is a diffuse magnetic peak superimposed over the strongest magnetic Bragg peak. The diffuse magnetic intensity is observed below as well above 100 K. This finding provides a new insight into the physics of this compound as though the low-dimensional magnetic interaction coexists with long range magnetic order - a novel situation among quasi one-dimensional oxides.