Research
It is known that microstructure control is essential for improving the "coercive force," which is an index of magnetic stability of permanent magnets. However, the relationship between microstructure and magnetic properties has yet to be fully elucidated. Our research aims to clarify the influence of microstructure on magnetic properties by using electron microscopic microstructural observation and chemical analysis.
Topics
- Microstructure and Coercivity of Neodymium Permanent Magnets
- Microstructure analysis of HDDR-based neodymium powder magnets
- Observation of magnetization process using in-situ TEM technique under magnetic field
- Nanostructure Analysis of PLD Thin Film Magnets
Shape memory alloys are mysterious alloy that returns to their original shape after being deformed and warmed up. This "shape memory effect" is closely related to a phase transformation called thermoelastic martensitic transformation. Our laboratory aims to elucidate the phase transformation mechanism through direct observation by electron microscopy.
Topics
- Phase Transformation of Cu-Al-Mn Single Crystal Shape Memory Alloys
- In-situ observation of the thermoelastic martensitic transformation
- Atomic resolution analysis of ω phase transformation in β-Ti alloys
Recent years have seen a remarkable evolution of electron microscopy, and its imaging techniques are used in research and development in a wide range of materials science fields. In our laboratory, we are researching the development and application of imaging techniques using scanning electron microscopy (SEM).
Topics
- SEM Secondary Electron Image Contrast Analysis in Ge Thin Films
- Visualization of ferromagnetic/ferroelectric domain structures by SEM