| Autor: |
Alka V. Deshmukh, K. P. Adhi, S. I. Patil, P. Predeep, Mrinal Thakur, M. K. Ravi Varma |
| Rok vydání: |
2011 |
| Předmět: |
|
| Zdroj: |
AIP Conference Proceedings. |
| ISSN: |
0094-243X |
| DOI: |
10.1063/1.3643593 |
| Popis: |
Thin films of Zn0.95Mn0.05O (ZMO) and Al or Bi (1 weight %) incorporated ZMO thin films (viz. Al: Zn0.95Mn0.05O (AZMO) and Bi: Zn0.95Mn0.05O (BZMO)) were grown on Al2O3 substrate by pulsed laser deposition (PLD). X‐ray diffraction studies indicate that all the deposited thin films were highly c‐axis oriented and showed single phase formation with wurtzite structure. Incorporation of 1 wt. % Al leads to reduction of the extensive strain (in AZMO) when compared to the ZMO thin film. However in case of BZMO, compressive strain is observed. Raman studies indicate that the wurtzite structure of the host material is preserved albeit incorporation of 1 wt. % highly mismatched Al or Bi ions. The optical transmission spectra (in the range 350 to 700 nm) of the AZMO and BZMO thin films show significant changes compared to ZMO thin film. The otherwise spin forbidden d‐d transitions of Mn2+ in the tetrahedral symmetry give rise to a strong absorption in the visible region for the ZMO thin film. This absorption band, ... |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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