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閱讀：256 發(fā)布時(shí)間：2015-5-27
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