Institute of Multidisciplinary Research for Advanced Materials, Tohoku University


LAST UPDATE 2021/05/02

  • 研究者氏名
    Researcher Name

    高橋純一 Junichi TAKAHASHI
    助教 Assistant Professor
  • 所属
    Professional Affiliation

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

    無機材料研究部門 無機固体材料合成研究分野
    Division of Inorganic Material Research, Inorganic Crystal Structural Materials Chemistry
  • 研究キーワード
    Research Keywords

    Materials Science
    Quantitative microscopy
    Thermoelectric energy conversion materials
    Crystal structure analysis
Research Subject
Research and characteristic evaluation of new functional materials

研究の背景 Background


The various properties of the functional materials undergo influence of the microstructure and the environment as well as constituent elements. In order to produce the material having the necessary performance a factor of function occurrence peculiar to the material has to be estimated in overlooking way from the atomic scale to the macro scale. Further, a breakthrough on a wall of the known material and continual development of new material search are required from development of advanced material.

研究の目標 Outcome


By using multilateral approach, such as new material creation, crystal structure analysis, simulation and statistical processing of multi-phase opaque-materials, measurement of thermoelectric properties, and consideration of a new method of analysis, studies with respect to the establishment of function creation, the elucidation of a function occurrence and the new evaluation method for ceramics and metallic materials are being carried out.

研究図Research Figure

Fig.1. Possible oxygen / nitrogen arrangement of Si2(O,N)7 ditetrahedra in the RE-J-phase determined by the Rietveld analysis using powder neutron diffraction data. Fig.2. Single crystals of Ca3Co2O6 prepared by a flux method. Fig.3. Extreme plot for the estimation of the maximum size distribution with a 2- dimensional diameter of the 2nd phase sections simulated from the 3-dimensional particles having log-normal distribution.

文献 / Publications

Acta Mater., 49, 711 (2001), Ibid, 49, 2355 (2001). J. Am. Ceram. Soc., 85, 2072 (2002). Metal. Mater. Trans. A, 34A, 171 (2003). Jpn. J. Appl. Phys., 43, L331 (2004). J. Eur. Ceram. Soc., 25, 793 (2005). Phys. Stat. Sol. A, 203, 2836 (2006). Mater. Sci. Forum, 554, 43 (2007). ISIJ Inter., 49, 1030 (2009).