Presentation Information
[P107]Microstructure and magnetic properties of oxygen-defective ZrO2-x phases produced by oxidation engineering
○Oda Yoshiharu1, Kenji Shida5, Motohide Matsuda4, Masahiro Ito3, Masaaki Tanaka2, Mitsuhiro Matsuda4 (1. Grad. Sch. Sci. Tech. Kumamoto Univ., 2. Grad. Sch. Eng. Nagoya Inst. Tech. , 3. Daiichi Kigenso Kagaku Kogyo Co. Ltd., 4. Fac. Adv. Sci. Tech. Kumamoto Univ., 5. Tech. Div. Kumamoto Univ.)
Keywords:
zirconia,oxygen deficiency,transmission electron microscopy (TEM),oxidation,magnetic properties
Oxygen-defective ZrO2-x was fabricated via precision oxidation of Zr foils. Under specific heat treatments, room-temperature ferromagnetism appeared. CTEM showed that heating above the phase transition induced fine variants with moiré-like contrasts suggesting a periodic oxygen-defective structure.
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