Volume 133, Number 4, February 2021
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||30 March 2021|
Magnetic, dielectric and optical properties of Al-, Mg-, Co- and Zn-ion–doped CuCrO2
1 University of Forestry - 1756 Sofia, Bulgaria
2 University of Architecture, Civil Engineering and Geodesy - 1046 Sofia, Bulgaria
3 University of Sofia - 1164 Sofia, Bulgaria
Received: 30 September 2020
Accepted: 26 January 2021
The effects of Al, Mg, Co and Zn ion doping on different properties of multiferroic CuCrO2 are studied using a microscopic model and the Green's function technique. The temperature dependence of the dielectric constant shows a kink near TN. For Al ion doping decreases, for Co it increases, whereas for Mg it has a maximum for . decreases with increasing magnetic field hab. The magnetization M is reduced with enhancing the Al and Zn doping concentration, whereas by Mg doping M shows a maximum at . The band gap Eg increases weakly for Zn doping. It decreases strongly with increasing Co and slightly with increasing Mg doping, which is in good quantitative agreement with the experimental data.
PACS: 75.85.+t – Magnetoelectric effects, multiferroics / 77.22.-d – Dielectric properties of solids and liquids / 75.10.-b – General theory and models of magnetic ordering
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