Electrical resistivity, optical and magnetic properties of the layered oxyselenide SmCuOSe |
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| Authors: | Jaime Llanos,Octavio Peñ a |
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| Affiliation: | a Departamento de Química, Facultad de Ciencias, Universidad Católica del Norte, Casa Central Antofagasta Pab. Avda. Angamos 0610, Casilla 1280, Antofagasta, Chile
b Laboratoire de Chimie du Solide et Inorganique Moléculaire, UMR 6511-CNRS, Université Rennes 1-Institut de Chimie de Rennes, 35042 Rennes Cedex, France |
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| Abstract: | The electrical and magnetic properties of the tetragonal phase SmCuOSe are reported as a function of the temperature. The optical properties were studied by means of diffuse reflectance spectrum in the UV-Vis range. The electrical resistivity measurements as well as diffuse reflectance spectrum show that SmCuOSe is a semiconductor with an optical band gap (Eg) of 2.6 eV. In this phase, Cu is at its monovalent oxidation state and, as such, it does not contribute to the total magnetic moment, whereas Sm is in its 3+ oxidation state, with a large VanVleck contribution due to the admixture of the fundamental state with higher energy levels. |
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| Keywords: | Oxychalcogenides Inorganic compound semiconductors Electrical properties Optical properties Magnetic properties |
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