Position:     Associate Professor
Degree:       Ph.D. (Engineering)
Laboratory: Energy and Environmental Materials

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To contribute to effective use of energy and reduction of environmental load, the magnetic functional materials are developing by controlling the cross-correlation effect between magnetism and various physical properties. The large cross-correlation effect between magnetism and calorific value associated with a magnetic field-induced first-order phase transition was discovered and practical magnetic refrigeration materials were developed. Recently, high-efficiency energy conversion between strain and magnetism is investigated for application to vibration power generation and actuators that support IoT and robot technology.

Publication

1. Fujieda*, S. Asano, S. Hashi, K. Ishiyama, T. Fukuda and S. Suzuki, “Significant Reduction in Young’s Modulus of Fe-Ga Alloy Single Crystal by Inverse Magnetostrictive Effect under Tensile Stress” J. Appl. Phys. 124 (2018) 233901.
2. Hisamatsu, S. Fujieda*, S. Seino, T. Nakagawa, and T. A. Yamamoto “Tetragonal Distortion due to the Jahn–Teller Effect and Coercivity of Cu_xCo_1−xFe₂O₄ Synthesized at Various Annealing Temperatures” IEEE Trans. Magn. 57 (2021) 2100804.
3. Inoue, T. Okada, S. Fujieda*, F. Osanai, S. Hashi, K. Ishiyama, S. Suzuki, S. Seino, T. Nakagawa and T. A. Yamamoto, “High-performance vibration power generation using polycrystalline Fe–Co-based alloy due to large inverse magnetostrictive effect, AIP Adv. 11 (2021) 035021.