title: Effect of oxygen content on the magnetic properties of multiferroic YMn(2)O(5+δ).
abstract: The effect of oxygen content on magnetic properties in the multiferroic YMn(2)O(5+δ) 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 ∼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 ∼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.
authors.affiliation: Division of Materials Science and Engineering, Ames Laboratory, US-DOE, Ames, IA 50011, USA. Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA.
authors.forename: C
authors.initials: C
authors.lastname: Ma
authors.forename: J-Q
authors.initials: JQ
authors.lastname: Yan
authors.forename: K W
authors.initials: KW
authors.lastname: Dennis
authors.forename: A
authors.initials: A
authors.lastname: Llobet
authors.forename: R W
authors.initials: RW
authors.lastname: McCallum
authors.forename: X
authors.initials: X
authors.lastname: Tan