Articles tagged "Oxides"

• The 16th European Microscopy Congress 2016

  Mapping cation-vacancy ordering and oxygen octahedral distortions in A-site deficient perovskites by monochromated core-loss EELS

  Demie Kepaptsoglou (1), David Hernandez-Maldonado (1), Feridoon Azough (2), Colin Ophus (3), Robert Freer (2), Quentin Ramasse (1)

  1. SuperSTEM, Sci-Tech Daresbury Campus, Keckwick lane, , Daresbury, Royaume Uni 2. School of Materials, University of Manchester, Manchester, Royaume Uni 3. National Centre for Electron Microscopy, LBNL, Berkeley, Etats-Unis

  A–site defficient perovskites are of particular interest for a range of engineering applications, such as ionic conductors, batteries and thermoelectric materials. The attraction of these…

• The 16th European Microscopy Congress 2016

  In-situ TEM growth of single-layer boron nitride dome-shaped nanostructures catalysed by iron clusters

  A. La Torre (1, 2), E. H. Åhlgren (3), M. W. Fay (1), F. Ben Romdhane (2), S. T. Skowron (3), A. J. Davies (3, 4), C. Parmenter (1), J. Jouhannaud (2), A. N. Khlobystov (3, 1), G. Pourroy (2), E. Besley (3), P. D. Brown (1), F. Banhart (2)

  1. Nanoscale and Microscale Research Centre, University of Nottingham, Nottingham, Royaume Uni 2. Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, Strasbourg, France 3. School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK. , University of Nottingham, Nottingham, Royaume Uni 4. School of Physics, University of Nottingham, University Park, Nottingham, NG7 2RD, UK. , University of Nottingham, Nottingham, Royaume Uni

  We report on the growth and formation of single-layer boron nitride dome-shaped nanostructures mediated by small iron clusters located on flakes of hexagonal boron nitride.…

• The 16th European Microscopy Congress 2016

  Atomic structure and electronic configurations of 2D thermoelectric cobaltates

  Laura Bocher (1), Alexandre Gloter (1), Odile Stéphan (1), Sylvie Hébert (2), Denis Pelloquin (2)

  1. Laboratoire de Physique des Solides, Univ. Paris-Sud, Université Paris-Saclay, CNRS, Orsay, France 2. Laboratoire CRISMAT, ENSICAEN, CNRS, Caen, France

  Among the numerous different oxide systems, the cobaltites present fascinating and complex physical properties directly correlated with their electronic structure. A strong interplay exists in…

• The 16th European Microscopy Congress 2016

  Recent applications of high energy and spatial resolution STEM-EELS to energy harvesting materials

  Quentin Ramasse (1), Alpesh Shukla (1), Fredrik Hage (1), Demie Kepaptsoglou (1), Feridoon Azough (2), Robert Freer (2)

  1. SuperSTEM Laboratory, SciTech Daresbury Campus, Daresbury, Royaume Uni 2. Department of Materials, University of Manchester, Manchester, Royaume Uni

  A new generation of electron beam monochromators has recently pushed the energy resolution of (scanning) transmission electron microscopes deep into the sub 20meV range [1].…

• The 16th European Microscopy Congress 2016

  Determining the structure/property relation at oxide interfaces by means of advanced TEM spectroscopy and imaging

  Nicolas Gauquelin (1), Sandra van Aert (1), Johann Verbeeck (1), Gustaff Van Tendeloo (1)

  1. EMAT, Department of Physics, University of Antwerp, EMAT, Department of Physics, University of Antwerp, Antwerpen, Belgique

  The study of novel physical properties appearing when two materials are interfaced has become one of the major fields of research in solid state physics…

• The 16th European Microscopy Congress 2016

  Tracking Atoms, Vacancies and Electrons via Aberration-corrected Microscopy and First-Principles Theory

  Stephen Pennycook (1), Maria Varela (2), Jaume Gazquez (3), Nevan Biškup (2), Juan Salafranca (2), Timothy Pennycook (4), Yuyang Zhang (5), Haijun Wu (1), Tian Feng (1), Nagahata Masahito (6), Sokrates Pantelides (5), Thirumalai Venkatesan (7)

  1. Materials Science and Engineering Dept, National University of Singapore, Singapore, Singapour 2. Departamento de Física Aplicada III, Universidad Complutense de Madrid, Madrid, Espagne 3. Institut de Ciència de Materials de Barcelona, Institut de Ciència de Materials de Barcelona, Barcelona, Espagne 4. Faculty of Physics, University of Vienna, Vienna, Autriche 5. Department of Physics and Astronomy, Vanderbilt University, Nashville, Etats-Unis 6. JEOL Asia Pte Ltd, JEOL Asia Pte Ltd, Singapore, Singapour 7. NUSNNI-NanoCore, NUSNNI-NanoCore, Singapore, Singapour

  The aberration-corrected scanning transmission electron microscope (STEM) can provide real space imaging and spectroscopy at atomic resolution with a new level of sensitivity to structure,…

• The 16th European Microscopy Congress 2016

  Monochromated STEM-EELS Analysis of Interface-Induced Polarization in LaCrO3-SrTiO3 Superlattices

  Steven Spurgeon (1), Despoina Kepaptsoglou (2), Lewys Jones (3), Ryan Comes (1), Quentin Ramasse (2), Phuong-Vu Ong (1), Peter Sushko (1), Scott Chambers (1)

  1. Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Etats-Unis 2. SuperSTEM, SciTech Daresbury Campus, Daresbury, Royaume Uni 3. Department of Materials, University of Oxford, Oxford, Royaume Uni

  Emergent phenomena at complex oxide interfaces continue to attract attention as the basis for a variety of next-generation devices, including photovoltaics and spintronics. Tremendous progress…