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29 results

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  • Multifunctional, self-assembled oxide nanocomposite thin films and devices
  • Wenrui Zhang, Ramamoorthy Ramesh, Judith L. MacManus-Driscoll, Haiyan Wang
  • Journal: MRS Bulletin / Volume 40 / Issue 9 / September 2015
  • Published online by Cambridge University Press: 04 September 2015, pp. 736-745
  • Print publication: September 2015
  • View abstract

    Complex oxides provide an ideal playground for exploring the interplay among the fundamental degrees of freedom: structural (lattice), electronic (orbital and charge), and magnetic (spin). In thin films and heterostructures, new states of matter can emerge as a consequence of such interactions. Over the past decade, the ability to synthesize self-assembled nanocomposite thin films of metal oxides has provided another pathway for creating new interfaces and, thus, new physical phenomena. In this article, we describe examples of such materials systems explored to date and highlight the fascinating multifunctional properties achieved. These include enhanced flux pinning in superconductors, strain-enhanced ferroelectricity, strain- and charge-coupled magnetoelectrics, tunable magnetotransport, novel electrical/ionic transport, memristors, and tunable dielectrics.

  • Synthesis, physics, and applications of ferroelectric nanomaterials
  • Mark J. Polking, A. Paul Alivisatos, Ramamoorthy Ramesh
  • Journal: MRS Communications / Volume 5 / Issue 1 / March 2015
  • Published online by Cambridge University Press: 03 March 2015, pp. 27-44
  • Print publication: March 2015
  • View abstract

    Improvement of both solution and vapor-phase synthetic techniques for nanoscale ferroelectrics has fueled progress in fundamental understanding of the polar phase at reduced dimensions, and this physical insight has pushed the boundaries of ferroelectric phase stability and polarization switching to sub-10 nm dimensions. The development and characterization of new ferroelectric nanomaterials has opened new avenues toward future nonvolatile memories, devices for energy storage and conversion, biosensors, and many other applications. This prospective will highlight recent progress on the synthesis, fundamental understanding, and applications of zero- and one-dimensional ferroelectric nanomaterials and propose new directions for future study in all three areas.

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