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文献名： Mechano-synthesis, structural and magnetic characterization, and heat release of α-Fe nanoparticles embedded in a wüstite matrix 作者： S.O.S. Batistaa, M.A. Moralesa, W.C. dos Santosa, C.A. Iglesiasa, E. Baggio-Saitovitchb, A.S. Carri?oa, F. Bohna, , , S.N. de Medeirosa a Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do Norte, 59078-900 Natal, RN, Brazil b Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud 150, Urca, 22290-180 Rio de Janeiro, RJ, Brazil 摘要：We report a study of the structural and magnetic properties, as well as of the heat release, of an iron/wüstite composite, prepared from iron powder and water by high energy mechanical milling. We identify that the produced sample consists of α-Fe nanoparticles embedded in a wüstite matrix and has high stability in time. Moreover, we observe that it presents noticeable features, as exchange bias effect at low temperatures and, when an alternating magnetic field is applied, its temperature reaches ～46 °C in ～600 s. Thus, the results and the possibility of tuning the magnetic properties of α-Fe nanoparticles embedded in a wüstite matrix, through interface interactions, place this system as a very attractive candidate for biomedical applications such as magnetic hyperthermia agent for cancer therapy. 关键词：Iron; Wüstite; Magnetic hyperthermia; M?ssbauer