Internal chemical pressure effect and magnetic properties of La-0.6(Sr0.4-xBax)MnO3
Journal
Journal of Solid State Chemistry
Journal Volume
156
Journal Issue
1
Pages
117-121
Date Issued
2001
Author(s)
Abstract
The effect of isovalent chemical substitution of Ba2+ into the Sr2+ sites on the structural and magnetic transition in La0.6(Sr0.4-xBax)MnO3 (x=0-0.4) has been investigated. The rhombohedral structure with space group R-3c is observed in this series of materials. Substitution of Sr and Ba in the La site changes the structural parameters such as the Mn-O bond lengths, thus allowing the study of the effect of the structure on magnetic properties. An increase in the Mn-O bond distance with increasing Ba content leads to a decrease in Tc (the temperature of the paramagnetic to ferromagnetic transition). © 2001 Academic Press.
Type
journal article