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來(lái)源：美國(guó)布魯克海文儀器公司 2015年05月27日 09:12

文獻(xiàn)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. Carriçoa, 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.

關(guān)鍵詞：Iron; Wüstite; Magnetic hyperthermia; Mössbauer

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