1. Structural, dielectric and magnetic studies of (0–3) type multiferroic (1 − x) BaTi0.8Sn0.2O3–(x) La0.5Ca0.5MnO3 (0 ≤ x ≤ 1) composite ceramics
- Author
-
Yaovi Gagou, Daoud Mezzane, Y. El Amraoui, Brigita Rožič, E. Choukri, S. Ben Moumen, Zdravko Kutnjak, Y. Hadouch, Hamadi Khemakhem, M'barek Amjoud, Valentin V. Laguta, M. El Marssi, and Najmeddine Abdelmoula
- Subjects
010302 applied physics ,Permittivity ,Condensed Matter - Materials Science ,Materials science ,Composite number ,Dielectric ,Condensed Matter Physics ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,Grain size ,Electronic, Optical and Magnetic Materials ,Remanence ,visual_art ,0103 physical sciences ,visual_art.visual_art_medium ,Multiferroics ,Ceramic ,Electrical and Electronic Engineering ,Composite material ,Saturation (magnetic) - Abstract
Multiferroic composites with the composition (1 − x) BaTi0.8Sn0.2O3–(x) La0.5Ca0.5MnO3 (x = 0, 0.3, 0.5, 0.7, 0.9 and 1) were prepared by sol–gel techniques. Rietveld refinements of the composites with 0–3 and 3–0 type connectivities exhibit the formation of pure phases and confirm the fraction of the composite samples. It was found that the composites grain size decreases slightly with increasing the La0.5Ca0.5MnO3 content. Magnetic measurements of the composite ceramics exhibit a gradual increase in saturation and remanent magnetization with increasing La0.5Ca0.5MnO3 content. Dielectric data demonstrate that the composite materials show high values of the dielectric constant in comparison with the parent compound BaTi0.8Sn0.2O3 (BTSO). In addition, an attempt is made to measure the magnetoelectric coupling coefficient and to explain the negative permittivity and losses occurring in these materials at a certain frequency and temperature conditions.
- Published
- 2020
- Full Text
- View/download PDF