Structural, dielectric and magnetic studies of (0–3) type multiferroic (1 − x) BaTi0.8Sn0.2O3–(x) La0.5Ca0.5MnO3 (0 ≤ x ≤ 1) composite ceramics

• Published in: Journal of materials science. Materials in electronics Vol. 31; no. 21; pp. 19343 - 19354
• Main Authors: Ben Moumen, S., Hadouch, Y., Gagou, Y., Mezzane, D., Amjoud, M., Choukri, E., Kutnjak, Z., Rožič, B., Abdelmoula, N., Khemakhem, H., El Amraoui, Y., Laguta, V., El Marssi, M.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-11-2020; Springer Nature B.V; Springer Verlag
• Subjects: Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composite materials; Condensed Matter; Coupling coefficients; Grain size; Magnetic measurement; Materials Science; Multiferroic materials; Optical and Electronic Materials; Permittivity; Physics; Sol-gel processes
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-020-04468-3

Multiferroic composites with the composition (1 − 
x
) BaTi
0.8
Sn
0.2
O
3
–(
x
) La
0.5
Ca
0.5
MnO
3
(
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 La
0.5
Ca
0.5
MnO
3
content. Magnetic measurements of the composite ceramics exhibit a gradual increase in saturation and remanent magnetization with increasing La
0.5
Ca
0.5
MnO
3
content. Dielectric data demonstrate that the composite materials show high values of the dielectric constant in comparison with the parent compound BaTi
0.8
Sn
0.2
O
3
(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.