Room-temperature multiferroic (magnetoelectric–magnetodielectric) coupling properties of hybrid microwave-sintered (1 − x)BaZr0.25Ti0.75O3 − xCo0.9Ni0.1Fe2O4 lead-free electromagnetic composites

• Published in: Journal of materials science. Materials in electronics Vol. 34; no. 27; p. 1863
• Main Authors: Mane, Sagar M., Teli, Aviraj M., Beknalkar, Sonali A., Tayade, Nishant T., Tarale, Arjun N., Tirmali, Pravin M., Kulkarni, Shrinivas B., Shin, Jae Cheol, Lee, Jaewoong
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.09.2023; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Composite materials; Coupling coefficients; Dielectric properties; Diffraction patterns; Electric fields; Ferroelectric materials; Ferroelectricity; Ferromagnetic phases; Ferromagnetism; Hysteresis loops; Lead free; Magnetic fields; Magnetic properties; Materials Science; Microwave sintering; Multiferroic materials; Optical and Electronic Materials; Phase transitions; Physics; Raman spectroscopy; Room temperature; Sintering
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-023-11236-6

This paper reports on the systematic investigation of the room-temperature magnetoelectric and magnetodielectric coupling coefficients on adding ferromagnetic phase ( x Co 0.9 Ni 0.1 Fe 2 O 4 , where x  = 0.1, 0.2, 0.3, and 0.4) to the non-toxic lead-free ferroelectric phase (BaZr 0.25 Ti 0.75 O 3 ) prepared via efficient, ultrafast, eco-friendly hybrid microwave sintering at 1100 °C. Rietveld’s refinement of the observed diffraction patterns reflects mixed-phase cubic and tetragonal crystal symmetries with space group Pm3m and P4mm for the ferroelectric phase and cubic Fd-3m for a ferromagnetic phase in each composite which was further verified through micro-Raman spectroscopy. Ferroelectric-ferrite composite at x  = 0.2, i.e., 0.8(BaZr 0.25 Ti 0.75 O 3 ) − 0.2(Co 0.9 Ni 0.1 Fe 2 O 4 ), had highest magnetoelectric and magnetodielectric coupling coefficients α ME = 2.71 mV / cm Oe and MD (%) = 5.19 at 1 kHz applied frequency, respectively. The existence of both ferroelectric and magnetic phases in each composite was confirmed using P – E and M – H hysteresis loops, respectively. This study provides an efficient alternative approach for developing multiferroic composites for various technological applications.