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Role of Fe and Co in optical conductivity and electronic structure of TbNi4Fe and TbNi4Co |
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| Authors: | Yu. V. Knyazev A. V. Lukoyanov Yu. I. Kuz’min A. Haldar K. G. Suresh |
| Affiliation: | 1. Institute of Metal Physics, Russian Academy of Sciences, Ural Branch, Yekaterinburg, 620990, Russia 2. Ural Federal University, Yekaterinburg, 620002, Russia 3. Magnetic Materials Laboratory, Department of Physics, IIT Bombay, Mumbai, 400076, India 4. Presently at S. N. Bose National Centre for Basic Sciences, Kolkata, 700098, India |
| Abstract: | Optical properties of two intermetallic compounds TbNi4Fe and TbNi4Co have been studied employing ellipsometry in a spectral range 0.22–15 μm to reveal their characteristic features in comparison with the parent compound TbNi5. The electronic structure of TbNi4Fe and TbNi4Co was calculated within the LSDA + U method (local spin density approximation with Hubbard U-correction). Based on the calculated electronic structure results, the theoretical optical conductivity was calculated and used to interpret experimental conductivity in the range of interband optical absorption. |
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