| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10632064 | Materials Research Bulletin | 2005 | 7 Pages |
Abstract
Magnesium borate of the form Mg2B2O5 has been prepared and its structural and thermal properties were studied using X-ray diffraction and differential thermal analysis. An investigation of the electrical and optical properties of Mg2B2O5 system has been carried out. The electrical resistivity of the sample was measured in the temperature range of 170-400Â K. The data analysis revealed an extrinsic nature of the conductivity with two impurity levels located at 0.13 and 0.71Â eV in the temperature ranges of 170-230Â K and 240-400Â K, respectively. The optical transmission and reflection was recorded at 300Â K in the incident photon energy range of 3.0-6.0Â eV. The absorption coefficient data analysis revealed an indirect optical energy band gap of 4.73Â eV. In addition, two impurity levels located at 3.43, and 4.49Â eV were observed in the absorption spectra.
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Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
A.F. Qasrawi, T.S. Kayed, A. Mergen, M. Gürü,