The Thin Films and Interfaces GroupProgress in energy technology is closely related to the development of new functional materials. Advancing competence in the preparation and characterisation of new functional materials is therefore a strategic aim of our group. Due to its focus on application in energy technology, this research program differs from those of Materials Research Departments at other Swiss research institutions.
Speaker: A. Fluri
Date: Monday 05 September 2016 16:30
Speaker: K. Shimamoto
Date: Thursday 08 September 2016 11:00
Speaker: B. Horváth
Date: Monday 26 September 2016 09:00
Speaker: D. Pergolesi
Date: Monday 10 October 2016 16:30
Coexisting multiple order parameters in single-layer LuMnO3 films
Physical Review B 94, 054423 (2016)
Magnetoelectric multiferroics hold great promise for electrical control of magnetism or magnetic control of ferroelectricity. However, single phase ferroelectric materials with a sizeable ferromagnetic magnetization are rare. Here, we demonstrate that a single-phase orthorhombic LuMnO3 thin film features coexisting magnetic and ferroelectric orders. The temperature dependence of the different order parameters are presented with ferromagnetic order appearing below 100 K and thus at much higher temperatures than ferroelectricity or antiferromagnetism (TN, TFE ≤ 40 K). Link
Sketch of a ferroic triangle showing the relation and techniques with which the ferroic orders, FM, AFM, and FE, and their mutual coupling in (110) LuMnO3 have been established. The experimental techniques written in black letters (polarized neutron reflectometry, PNR; resonant soft x-ray diffraction, SXRD; x-ray diffraction, XRD) to identify ferroic properties have been reported elsewhere [22,24]. Magnetization, susceptibility, μSR, neutron diffraction, and electrical polarization are reported in the text.