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Synthesis and magnetic properties of CdS/α-Fe2O3 hierarchical nanostructures.
- Source :
- Science in China. Series G: Physics & Astronomy; Jul2009, Vol. 52 Issue 7, p997-1002, 6p
- Publication Year :
- 2009
-
Abstract
- CdS/α-Fe<subscript>2</subscript>O<subscript>3</subscript> hierarchical nanostructures, where the CdS nanorods grow irregularly on the side surface of α-Fe<subscript>2</subscript>O<subscript>3</subscript> nanorods, were synthesized via a three-step process. The diameters and lengths of CdS nanorods can be tuned by changing the ethylenediamine (EDA) and Cd ion concentrations. The magnetic investigations by superconducting quantum interference device indicate that the hierarchical nanostructures have an Morin transition at lower temperature (230 K) than that of the single bulk α-Fe<subscript>2</subscript>O<subscript>3</subscript> materials (263 K). Importantly, the hierarchical nanostructures exhibit weakly ferromagnetic characteristics at 300 K. A sharp peak assigned to the surface trap induced emission are observed in room temperature PL spectra. Combining with the optoelectronic properties of CdS, the CdS/α-Fe<subscript>2</subscript>O<subscript>3</subscript> hierarchical nanostructures may be used as multi-functional materials for optoelectronic and magnetic devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16721799
- Volume :
- 52
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Science in China. Series G: Physics & Astronomy
- Publication Type :
- Academic Journal
- Accession number :
- 50115909
- Full Text :
- https://doi.org/10.1007/s11433-009-0135-9