Laser-Induced Forward Transfer for the Fabrication of Devices

(a) Mn K-edge XANES spectra of the ∼60 nm o-LMO epitaxial film were measured at room temperature for polarizations E || [110] and E || [001]. The inset shows the magnified pre-edge features. (b) FEFF simulations using the crystallographic data of the bulk o-LMO sample for E || [110] and E || [001]. The simulated pre-edges are shown on a larger scale in the inset.
(a) Mn K-edge XANES spectra of the ∼60 nm o-LMO epitaxial film were measured at room temperature for polarizations E || [110] and E || [001]. The inset shows the magnified pre-edge features. (b) FEFF simulations using the crystallographic data of the bulk o-LMO sample for E || [110] and E || [001]. The simulated pre-edges are shown on a larger scale in the inset.

Abstract:

X-ray near edge absorption spectroscopy was used to probe the electronic structure of multiferroic orthorhombic LuMnO3 polycrystalline samples and strained, twin-free orthorhombic (1–10) LuMnO3 films grown by pulsed laser deposition on (1–10) YAlO3 substrates. For all o-LuMnO3 samples x-ray near edge absorption spectroscopy spectra reveal that the pre-edge structure is influenced by the increase in MnO6 distortion as a result of the smaller Re-ion or film strain. Furthermore there is clear evidence of anisotropic Mn-O bonding and Mn orbital ordering along the c- and [110] direction. The experimental film and bulk data are in agreement with ab initio simulations.
Keywords: pulsed laser deposition; othrorhomic LuMnO3 thin films; multiferroics; X-ray near edge absorption spectroscopy; electronic structure; ab initio simulations; FEFF;

Facility: ENE, NUM, LDM, LNS, Thin Films and Interfaces

Reference: Y. Hu, C. N. Borca, E. Kleymenov, M. Nachtegaal, B. Delley, M. Janousch, A Dönni, M. Tachibana, H. Kitazawa, E. Takayama-Muromachi, M. Kenzelmann, C. Niedermayer, T. Lippert, A. Wokaun, C. W. Schneider, Appl. Phys. Lett. 100, 252901 (2012)

Read full article: here