Dilute magnetism in Zn1-xMnxTe nanocrystals grown in a glass template

被引：21
|
作者：
Dantas, Noelio Oliveira [1 ]
Silva, Alessandra dos Santos [1 ]
Feria Ayta, Walter Elias [1 ]
da Silva, Sebastiao William [2 ]
de Morais, Paulo Cesar [2 ]
Pereira-da-Silva, Marcelo A. [3 ,4 ]
Marques, Gilmar Eugenio [5 ]
机构：
[1] Univ Fed Uberandia, Inst Fis, LNMIS, BR-38400902 Uberdandia, MG, Brazil
[2] Univ Brasilia, Inst Fis, Nucleo Fis Aplicada, BR-70910900 Brasilia, DF, Brazil
[3] Inst Fis Sao Carlos USP, BR-13560250 Sao Carlos, SP, Brazil
[4] Ctr Univ Cent Paulista UNICEP, BR-13563470 Sao Carlos, SP, Brazil
[5] Univ Fed Sao Carlos, Dept Fis, BR-13560905 Sao Carlos, SP, Brazil
来源：
CHEMICAL PHYSICS LETTERS | 2012年 / 541卷
基金：
巴西圣保罗研究基金会;
关键词：
PHOTOLUMINESCENCE; EPITAXY;
D O I：
10.1016/j.cplett.2012.05.031
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：
Zn1-xMnxTe dilute magnetic nanocrystals (NCs) were synthesized by fusion method in a glass template and annealed post-growth. Magnetism and quantum confinement of incorporated Mn-ions were confirmed by magnetic force microscopy (MFM), Raman scattering (RS) and electron paramagnetic resonance (EPR). A blueshift in the RS spectra were clear signatures of Mn2+ incorporation in the dot structure which were monitored as a function of increasing doping concentration, x. MFM images strongly indicated the formation of Zn1-xMnxTe magnetic phases in the glass system. The EPR spectra showed six lines associated to the S = 5/2 spin half filled d-state, characteristic of Mn2+ ions. (C) 2012 Published by Elsevier B.V.
引用
收藏
页码：44 / 48
页数：5
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