AVS 58th Annual International Symposium and Exhibition
    Magnetic Interfaces and Nanostructures Division Thursday Sessions
       Session MI-ThP

Paper MI-ThP7
Promise of New Multiferroics: Synthesis and Characterization of Epitaxial NiTiO3 Films

Thursday, November 3, 2011, 6:00 pm, Room East Exhibit Hall

Session: Magnetic Interfaces and Nanostructures Poster Session
Presenter: Tamas Varga, Pacific Northwest National Laboratory
Authors: T. Varga, Pacific Northwest National Laboratory
T. Droubay, Pacific Northwest National Laboratory
M.E. Bowden, Pacific Northwest National Laboratory
S.A. Chambers, Pacific Northwest National Laboratory
B. Kabius, Pacific Northwest National Laboratory
W.A. Shelton, Pacific Northwest National Laboratory
P. Nachimuthu, Pacific Northwest National Laboratory
V. Shutthanandan, Pacific Northwest National Laboratory
Correspondent: Click to Email

In a search for new multiferroic materials where the direction of magnetization can be switched by an applied electric field, we have looked for materials in which polarization and magnetization are strongly coupled. Recent theory calculations predicted that the family of compounds MTiO 3 (M = Mn, Fe, Ni), in a certain polymorphic structure (acentric R3c), are promising candidates where a polar lattice distortion can induce weak ferromagnetism. Guided by these insights, a rhombohedral phase of Ni TiO3 has been prepared in epitaxial thin film form, whose structure is very close to that predicted to be a multiferroic. The synthesis of such new epitaxial films, their full structural characterization along with our first-principles DFT calculations to predict the desired NiTiO3 structure and its stability are reported .