Weak ferromagnetism in Mn2+ doped Bi2Te3 nanocrystals grown in glass matrix

被引：8

作者：

Silva, R. S. ^{[1
]}

Gualdi, A. J. ^{[2
]}

Zabotto, F. L. ^{[3
]}

Cano, N. F. ^{[4
]}

Silva, A. C. A. ^{[5
]}

Dantas, N. O. ^{[5
]}

机构：

[1] Univ Fed Triangulo Mineiro, Dept Fis, ICENE, BR-38025180 Uberaba, MG, Brazil

[2] Univ Fed Sao Carlos, Dept Fis, GSM, BR-13565905 Sao Carlos, SP, Brazil

[3] Univ Fed Sao Carlos, Dept Fis, GMF, BR-13565905 Sao Carlos, SP, Brazil

[4] Univ Fed Sao Paulo, Dept Ciencias Mar, BR-11030400 Santos, SP, Brazil

[5] Univ Fed Uberlandia, LNMIS, Inst Fis, BR-38400902 Uberlandia, MG, Brazil

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 708卷

关键词：

Mn-doped; Bi2Te3; Ferromagnetism; Nanocrystals; Glass; IONS;

D O I：

10.1016/j.jallcom.2017.03.066

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：619 / 622

页数：4

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