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Effect of oxygen content on the magnetic properties of multiferroic YMn2O5+delta

TitleEffect of oxygen content on the magnetic properties of multiferroic YMn2O5+delta
Publication TypeJournal Article
Year of Publication2009
AuthorsMa C, Yan JQ, Dennis KW, Llobet A, McCallum RW, Tan X
Journal TitleJournal of Physics-Condensed Matter
Volume21
Pages346002
Date Published08/26
ISBN Number0953-8984
Accession NumberISI:000268747900021
Keywordsla, nd, pr, rmn2o5 r, y2mn2o7
Abstract

The effect of oxygen content on magnetic properties in the multiferroic YMn2O5+delta system was investigated with samples prepared under different oxygen pressures. Our results show that, with increasing oxygen content, the magnetic response changes from being dominated by the anomaly at similar to 45 K to the one around 20 K. However, specific heat measurements and neutron powder diffraction studies indicate that the presence of the magnetic transition at similar to 45 K is independent of oxygen content. The results suggest that oxygen nonstoichiometry can be one important degree of freedom in manipulating the multiferroic properties.
URL<Go to ISI>://000268747900021
DOI10.1088/0953-8984/21/34/346002