José de Los Santos Guerra, Madhuparna Pal, Roney J. Portugal, Luiz F. Cótica, Ivair A. Santos, Ruyan Guo e Amar S. Bhalla

JOURNAL OF APPLIED PHYSICS – Volume: 114; Issue: 22; Article Number: 224113; DOI: 10.1063/1.4848998

The ferroelectric, magnetic, and magneto-electric properties of a PZT/Ba-hexaferrite (PbZrTiO/BaFeO) ceramic composite are reported. The expected rhombohedral-PZT and Ba-hexaferrite phases have been confirmed from structural and Rietveld refinement analyses, without additional undesired phases. Well-saturated ferroelectric and magnetic hysteresis loops confirmed the ferroelectric and magnetic nature of the study system, revealing enhanced characteristics when compared to those reported for typical multiferroics. The existence and enhancement of the magneto-electric response have been demonstrated by measuring the effect of the external DC magnetic field on the dielectric permittivity. The obtained results suggest an excellent candidate for room temperature multiferroic system with enhanced properties.