Effect of doping of Co, Ni and Ga on magnetic and dielectric properties of layered perovskite multiferroic YBaCuFeO5
arXiv:1905.08982 · doi:10.1016/j.jmmm.2019.166124
Abstract
YBaCuFeO5 is one of the interesting multiferroic compounds, which exhibits magnetic ordering and dielectric anomaly above 200 K. Partial substitution of Fe with other magnetic and non-magnetic ion affects the magnetic and the structural properties of the system. We report detailed investigation of structural, magnetic and dielectric properties of YBaCuFe0.85M0.15O5 (M=Co, Ni and Ga). We observed that the partial replacement of Ni and Co in place of Fe, results in magnetic dilution and broadening of the magnetic transition and shifting towards lower temperature. The replacement of Fe with non-magnetic Ga also results in shifting of the magnetic transition to the lower temperature side. The observed dielectric relaxation behavior in these compounds is due to the charge carrier hoping. This study highlights the impacts of magnetic and non-magnetic doping at the magnetic site on magnetic and dielectric properties in layered perovskite compound YBaCuFeO5.
arXiv comment12 pages
References in corpus (8)
- Multiferroics: different ways to combine magnetism and ferroelectricity
- Multiferroicity with high-Tc in ceramics of the YBaCuFeO5 ordered perovskite
- Tuning magnetic spirals beyond room temperature with chemical disorder
- Incommensurate magnetic structure, Fe/Cu chemical disorder and magnetic interactions in the high-temperature multiferroic YBaCuFeO5
- Design of magnetic spirals in layered perovskites: extending the stability range far beyond room temperature
- High Temperature Multiferroic State in RBaCuFeO5 (R= Y, Lu and Tm)
- Evolution of magnetic and dielectric properties in Sr-substituted high temperature multiferroic YBaCuFeO5
- Effect of (Cu/Fe)O5 bipyramid size and separation on magnetic and dielectric properties of rare earth layered perovskite LaBaCuFeO5 and LuBaCuFeO5