Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2010-12-21
Phys. Rev. B 83, 174420 (2011)
Physics
Condensed Matter
Strongly Correlated Electrons
REVTeX style; 6 pages, 8 figures
Scientific paper
10.1103/PhysRevB.83.174420
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.
Ivanov S. A.
Mathieu Renaud
Nordblad Per
Tellgren R.
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