Abstract
Mn:ZnO/Mn:ZnS core-shell heterostructures, in which Mn2+ ions are incorporated into ZnO and ZnS host lattice by replacing Zn2+ ion sites, have been synthesized by coating single-crystalline Mn:ZnO nanorods with a thin layer of Mn:ZnS nanocrystals. The heterostructures possess visible/ultraviolet photoluminescences and intrinsic room-temperature ferromagnetism. Photoluminescent spectrum exhibits enhanced ultraviolet emission of Mn:ZnO, defect-related green emission of Mn:ZnS, and strong orange emission due to 4T1(4G)-6A1( 6S) transition of Mn2+ in ZnS. A strong ferromagnetic layer is found to exist on the surface of the Mn:ZnO core, which makes a much larger contribution to the macroscopic ferromagnetism of the heterostructures.
| Original language | English |
|---|---|
| Pages (from-to) | 405-408 |
| Number of pages | 4 |
| Journal | Materials Letters |
| Volume | 92 |
| DOIs | |
| State | Published - 2013 |
| Externally published | Yes |
Keywords
- Luminescence
- Magnetic materials
- Semiconductors
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