Physics – Condensed Matter – Materials Science
Scientific paper
2009-12-15
Physics
Condensed Matter
Materials Science
18 pages, 4 figures, submitted to Solid State Communications
Scientific paper
We have investigated the effects of substituting In for Mn on the antiferromagnetic phase transition in YMnO3 using magnetic, dielectric, and specific heat measurements. We prepared a set of isostructural phase pure hexagonal YMn$_{1-x}$In$_{x}$O$_{3}$ samples having x=0 to x=0.9, which exhibit a systematic decrease of the antiferromagnetic ordering temperature with increasing In content. The multiferroic phase, which develops below TN, appears to be completely suppressed for x$\geq$0.5 in the temperature range investigated, which can be attributed solely to the dilution of magnetic interactions as the crystal structure remains hexagonal. Similar to previous reports, we find an enhancement of the magnetocapacitive coupling on dilution with non-magnetic ions.
Dixit Ambesh
Lawes Gavin
Smith Andrew E.
Subramanian M. A.
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