| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1548614 | Progress in Natural Science: Materials International | 2011 | 5 Pages |
Mn-doped ZnO single crystals have been grown by the flux-Bridgman method from a high temperature solution of 24% ZnO-76% PbF2 (molar fraction). A fast nucleation was induced by the gas-cooling system at the bottom of the Pt crucible. A red Mn:ZnO crystal up to 13 mm×15 mm×(3–4) mm was obtained. Powder XRD patterns showed that the as-grown crystals were in wurtzite structure. Electron Probe Microanalyser (EPMA) revealed that some PbF2 inclusions formed due to fast nucleation. The additional Raman mode at 524 cm−1 was attributed to the incorporation of Mn ions into ZnO crystal. Six-line hyperfine structure was observed in the electron paramagnetic resonance (EPR) spectra, which confirmed that Mn ions occupied Zn2+ lattice sites with valence state of +2.
