Weak ferromagnetism in Mn2+ doped Bi2Te3 nanocrystals grown in glass matrix
Data
2017
Autores
Cano, Nilo Francisco 
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We observed weak ferromagnetism in Bi2-xMnxTe3 nanocrystals grown in a glass matrix. Magnetization measurements at 5 K showed an increase in the coercive field that was proportional to Manganese concentration. Transmission Electron Microscopy images showed the formation of Bi2-xMnxTe3 nanocrystals with an average size of 5.0 nm. X-ray diffraction measurements revealed the hexagonal structure of the Bi2-xMnxTe3 nanocrystals and confirmed the replacement of Bi3+-ions with Mn2+-ions at different x(Mn)-concentrations. Electron Paramagnetic Resonance of these Mn-doped Bi2Te3 nanocrystals showed six lines associated with the S = 5/2 spin half-filled d-electrons that are characteristic of Mn2+ ions. (C) 2017 Elsevier B.V. All rights reserved.
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Journal Of Alloys And Compounds. Lausanne, v. 708, p. 619-622, 2017.