Influence of the $A$ cation on the low-temperature antiferromagnetism of ordered antiferroelectric $A_2$CoTeO${}_6$ perovskites

Abstract

We have investigated the structural and magnetic properties of antiferroelectric $A_2$CoTeO${}_6$ perovskites with $A$ = Cd, Ca, Sr, Pb, and Ba. All compounds are antiferromagnetic at low temperatures, with the antiferromagnetic transition temperature slightly decreasing with decreasing ionic size of the $A$ cation. Such a decrease in antiferromagnetic interaction is not observed in $A_2^{2+}$Co$M^{6+}$O${}_6$ materials with other $M^{6+}$ cations of similar ionic sizes, suggesting that Te${}^{6+}$ cations affect the electronic and in turn the magnetic structure of the system.

arXiv commentREVTeX style; 6 pages, 8 figures

References in corpus (2)

• Electronic Structure of Sr_2FeMoO_6
• Ab-initio prediction of a new multiferroic with large polarization and magnetization

Cited by in corpus (3)

• Complex magnetism and magnetic field-driven electrical polarization in Co${}_3$TeO${}_6$
• Field-driven successive phase transitions in quasi-two-dimensional frustrated antiferromagnet Ba${}_2$CoTeO${}_6$ and highly degenerate classical ground states
• Magnetization plateau and supersolid phases in the spin-1/2 antiferromagnetic Heisenberg model on a tetragonally distorted fcc lattice