Masami Terauchi
Professor
Yohei Sato
Associate Professor
Daisuke Morikawa
Assistant Professor
Keywords
  • nm-scale physics
  • electron microscopy
  • electron energy-loss spectroscopy
  • soft-X-ray emission spectroscopy
  • convergent-beam electron diffraction

Major Grad.Sch. of Science
Web Site http://www2.tagen.tohoku.ac.jp/lab/terauchi/html/index.html

Development and Applications of nm-scale Crystallography and Spectroscopies

Our lab develops accurate nanometer scale characterization methods of crystal structures by convergent-beam electron diffraction (CBED)and electronic structures by electron energy-loss spectroscopy((EELS) and soft-X-ray emission spectroscopy (SXES) for evaluating new functional materials. For performing crystal structure studies, we developed a new Ω-filter electron microscope and a refinement soft-ware, which can perform not only atom positions but also electrostatic potential and charge distributions. For electronic structure studies, a high-resolution EELS microscope and SXES instruments were developed. Figure shows boron K-emission spectra of metal hexa-borides obtained by using a developed SXES instrument attached to a transmission electron microscope.

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