Synthesis process controlled magnetic properties of Pb1-xMnxS nanocrystals

被引：49
作者：
Silva, R. S. [1 ]
Morais, P. C.
Qu, Fanyao
Alcalde, A. M.
Dantas, N. O.
Sullasi, H. S. L.
机构：
[1] Univ Brasilia, Inst Fis, BR-70910 Brasilia, DF, Brazil
[2] Univ Fed Uberlandia, Inst Fis, BR-38400 Uberlandia, MG, Brazil
[3] Univ Sao Paulo, Inst Fis, BR-05508 Sao Paulo, Brazil
[4] Fac Tecnol Sao Paulo, BR-01124 Sao Paulo, Brazil
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 25期
关键词：
D O I：
10.1063/1.2746076
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Mn-doped PbS nanocrystals (NCs) in an oxide glass matrix have been synthesized by the fusion method. Two kinds of Mn2+ sites, located inside and on the surface of NCs, are observed by electron paramagnetic resonance (EPR) spectroscopy in the X band and at room temperature. The proportion of their contribution to the hyperfine structure in the EPR spectrum depends strongly on thermal annealing time. The authors illustrate how thermal annealing process manifests itself in engineering the magnetic properties of NCs. (c) 2007 American Institute of Physics.
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