Sarma, DD and Viswanatha, Ranjani and Sapra, Sameer and Prakash, Ankita and Garcia-Hernandez, M (2005) Magnetic Properties of Doped II-VI Semiconductor Nanocrystal. In: Journal of Nanoscience and Nanotechnology, 5 (9). pp. 1503-1508.
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We investigate the magnetic properties of two typical II VI semiconducting nanocrystals, namely, ZnS and ZnO, doped with various concentrations of a transition metal ion, Mn. A wide range of dopant concentrations was explored without changing the size of the nanocrystal, thereby allowing us to study the concentration dependence of various properties independent of any size variation of the host. However, only small doping concentrations could be realized in each case. All the studies were thus carried out with ZnS and ZnO nanocrystals with their respective average sizes fixed at about 1.6 and 4.7 nm. We show that the magnetic properties of such doped systems, remaining paramagnetic down to the lowest temperature (<3 K), can provide important and accurate information concerning the dopant level in such samples.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of Nanoscience and Nanotechnology |
| Publisher: | American Scientific Publishers |
| Additional Information: | The copyright of this article belongs to American Scientific Publishers (ASP). |
| Keywords: | Nanocrystals;II-VI Semiconductors;Transition Metal Doping;Magnetic Properties |
| Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit |
| Date Deposited: | 06 Mar 2006 |
| Last Modified: | 25 Oct 2010 05:40 |
| URI: | http://eprints.iisc.ac.in/id/eprint/5452 |
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