2021年12月 Self-heating Ability in the AC Magnetic Field of Fine MgFe2O4 Powder Prepared by Solution Combustion Method The Material Research Meeting 2021, MRM2021 N.Ogasawara, H.Hirazawa, M.Sakamoto, A.Tagashira, U.Enkhnaran, D.Sangaa, T.Yu.Kiseleva, H.Aono