| Autor: |
Reddy, R. Rama Subba, Fayazuddin, Md., Reddy, G. Siva, Reddy, S. Lakshmi, Rao, P. Sambasiva, Reddy, B. J., Garcia, F. Nieto |
| Zdroj: |
Crystal Research and Technology; March 2004, Vol. 39 Issue: 3 p240-244, 5p |
| Abstrakt: |
Renierite from Congo is used in the present investigations. It contains only two transition elements iron and copper. EPR results indicate the presence of Fe(III) and Cu(II) with g values 2.03 and 2.40 respectively. Optical absorption spectrum shows several energies in UV-Vis and NIR region. These energies indicate both Fe(III) and Cu(II) in tetrahedral site. IR spectrum confirms the presence of sulphate and hydroxyl groups in the mineral. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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