• DOI:10.1038/s41598-019-46834-0
• Corpus ID: 119197302

Ferromagnetic-like behavior of Bi0.9La0.1FeO3–KBr nanocomposites

@article{Karpinsky2019FerromagneticlikeBO,
  title={Ferromagnetic-like behavior of Bi0.9La0.1FeO3–KBr nanocomposites},
  author={Dmitry V. Karpinsky and Olena M. Fesenko and Maxim V. Silibin and S. V. Dubkov and Mykola Chaika and Andrii D. Yaremkevich and Anna Lukowiak and Yuriy Gerasymchuk and Wiesław Stręk and Andrius Pakalni{\vs}kis and Ramūnas Skaud{\vz}ius and Aivaras Kareiva and Yevhen M. Fomichov and Vladimir V. Shvartsman and Sergei V. Kalinin and Nicholas V. Morozovsky and Anna N. Morozovska},
  journal={Scientific Reports},
  year={2019},
  volume={9}
}

• D. Karpinsky, O. Fesenko, +14 authors A. Morozovska
• Published 22 January 2019
• Materials Science
• Scientific Reports

We studied magnetostatic response of the Bi0.9La0.1FeO3– KBr composites (BLFO-KBr) consisting of nanosized (≈100 nm) ferrite Bi0.9La0.1FeO3 (BLFO) conjugated with fine grinded ionic conducting KBr. When the fraction of KBr is rather small (less than 15 wt%) the magnetic response of the composite is very weak and similar to that observed for the BLFO (pure KBr matrix without Bi1-xLaxFeO3 has no magnetic response as anticipated). However, when the fraction of KBr increases above 15%, the magnetic response of the composite changes substantially and the field dependence of magnetization reveals ferromagnetic-like hysteresis loop with a remanent magnetization about 0.14 emu/g and coercive field about 1.8 Tesla (at room temperature). Nothing similar to the ferromagnetic-like hysteresis loop can be observed in Bi1-zLazFeO3 ceramics with z ≤ 0.15, which magnetization quasi-linearly increases with magnetic field. Different physical mechanisms were considered to explain the unusual experimental results for BLFO-KBr nanocomposites, but only those among them, which are highly sensitive to the interaction of antiferromagnetic Bi0.9La0.1FeO3 with ionic conductor KBr, can be relevant.