title: Multiferroic properties of o-LuMnO3 controlled by b-axis strain.
abstract: Strain is a leading candidate for controlling magnetoelectric coupling in multiferroics. Here, we use x-ray diffraction to study the coupling between magnetic order and structural distortion in epitaxial films of the orthorhombic (o-) perovskite LuMnO(3). An antiferromagnetic spin canting in the E-type magnetic structure is shown to be related to the ferroelectrically induced structural distortion and to a change in the magnetic propagation vector. By comparing films of different orientations and thicknesses, these quantities are found to be controlled by b-axis strain. It is shown that compressive strain destabilizes the commensurate E-type structure and reduces its accompanying ferroelectric distortion.
authors.affiliation: Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.
authors.forename: Y W
authors.initials: YW
authors.lastname: Windsor
authors.affiliation: Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.
authors.forename: S W
authors.initials: SW
authors.lastname: Huang
authors.affiliation: General Energy Research Department, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.
authors.forename: Y
authors.initials: Y
authors.lastname: Hu
authors.affiliation: Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.
authors.forename: L
authors.initials: L
authors.lastname: Rettig
authors.affiliation: Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.
authors.forename: A
authors.initials: A
authors.lastname: Alberca
authors.affiliation: General Energy Research Department, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.
authors.forename: K
authors.initials: K
authors.lastname: Shimamoto
authors.affiliation: Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.
authors.forename: V
authors.initials: V
authors.lastname: Scagnoli
authors.affiliation: General Energy Research Department, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.
authors.forename: T
authors.initials: T
authors.lastname: Lippert
authors.affiliation: General Energy Research Department, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.
authors.forename: C W
authors.initials: CW
authors.lastname: Schneider
authors.affiliation: Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.
authors.forename: U
authors.initials: U
authors.lastname: Staub