Multiferroic behavior, enhanced magnetization and exchange bias effect of Zn substituted nanocrystalline LaFeO3 (La(1−x)ZnxFeO3, x=0.10, and 0.30)

摘要: Abstract Nanocrystalline Zn-substituted lanthanum orthoferrite La (1− x ) Zn FeO 3 ( =0.1 and 0.3) (LZFO1 for LZFO2 = was prepared by a chemical co-precipitation method. The as-prepared samples were annealed at 500 °C 12 h. formation of the pure crystallographic phase LaFeO (LFO) substitution 2+ in doped confirmed X-ray diffractograms. Magnetization curves hysteresis loops range 300–2 K showed that magnetization considerably enhanced compared to pristine LFO. maximum enhancement factor ∼2.5 saturation measured room temperature found LZFO2. Interestingly, an exchange bias effect observed nanoparticles LFO LZFOs, which suggest antiferromagnetic–ferromagnetic (AFM–FM) core-shell structure AFM LZFOs. hysteretic behavior polarization–electric field recorded indicates onset ferroelectric ordering samples. dielectric constant presence absence magnetic are type-II multiferroics with positive magneto-coupling effect.