Kedarnath, Gotluru ; Dey, Sandip ; Jain, Vimal K. ; Dey, Gautam K. ; Kadam, Ramakant M. (2008) Synthesis of undoped and manganese-doped HgTe nanoparticles using [Hg (TeCH2CH2NMe2)2] as a single source precursor Journal of Nanoscience and Nanotechnology, 8 (9). pp. 4500-4505. ISSN 1533-4880
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Official URL: http://www.ingentaconnect.com/content/asp/jnn/2008...
Related URL: http://dx.doi.org/10.1166/jnn.2008.314
Abstract
The Reaction of [HgCl2(tmeda)] with NaTeCH2CH2NMe2 gave a mercury tellurolate, [Hg(TeCH2CH2.NMe2)2] (1) as a yellow crystalline solid, which was characterized by elemental analysis, UV-vis, mass and NMR (1H, 13C, 125Te, 199Hg) spectroscopy. Thermolysis of 1 in hexadecylamine (HDA) at 90 °C in the absence and presence of Mn(OAc)2.4H2O gave undoped and Mn-doped HgTe nanoparticles which were characterized by XRD, EDAX, TEM, EPR and magnetic measurements. These particles could be synthesized with mean particle size of 6-7 nm (from TEM). Manganese substitution at Hg site in HgTe lead to a linear decrease in lattice parameter with increasing concentration of Mn. Magnetization measurements showed ferromagnetic ordering at room temperature with very small coercive field (Hc, 50 Oe) for Hg0.973Mn0.027 Te sample. This sample also exhibited distinct ferromagnetic resonance (FMR) in the EPR spectrum.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Scientific Publishers. |
| Keywords: | N,N-Dimethylaminoethaneselenolate; HGTE Nanoparticles; MN Doped HGTE Nanoparticles; Room Temperature Ferromagnetism; TEM; Squid |
| ID Code: | 82298 |
| Deposited On: | 10 Feb 2012 04:51 |
| Last Modified: | 10 Feb 2012 04:51 |
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