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

Dmitry V Karpinsky; Olena M Fesenko; Maxim V Silibin; Sergei V Dubkov; Mykola Chaika; Andrii Yaremkevich; Anna Lukowiak; Yuri Gerasymchuk; Wiesław Stręk; Andrius Pakalniškis; Ramūnas Skaudžius; Aivaras Kareiva; Yevhen M Fomichov; Vladimir V Shvartsman; Sergei V Kalinin; Nicholas V Morozovsky; Anna N Morozovska

doi:10.1038/s41598-019-46834-0

Title	Ferromagnetic-like behavior of Bi0.9La0.1FeO3-KBr nanocomposites /
Authors	Karpinsky, Dmitry V ; Fesenko, Olena M ; Silibin, Maxim V ; Dubkov, Sergei V ; Chaika, Mykola ; Yaremkevich, Andrii ; Lukowiak, Anna ; Gerasymchuk, Yuri ; Stręk, Wiesław ; Pakalniškis, Andrius ; Skaudžius, Ramūnas ; Kareiva, Aivaras ; Fomichov, Yevhen M ; Shvartsman, Vladimir V ; Kalinin, Sergei V ; Morozovsky, Nicholas V ; Morozovska, Anna N
DOI	10.1038/s41598-019-46834-0
Full Text
Is Part of	Scientific reports.. London : Nature publishing group. 2019, vol. 9, art. no. 10417, p. [1-10].. ISSN 2045-2322. eISSN 2045-2322
Keywords [eng]	Multiferroics ; BiFeO3 ; Ferromagnetic (FM)
Abstract [eng]	We studied magnetostatic response of the Bi0.9La0.1FeO3-KBr composites (BLFO-KBr) consisting of nanosized (about 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 percent) 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 15percent, 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 BLFO ceramics, 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. An appropriate mechanism turned out to be ferro-magneto-ionic coupling.
Published	London : Nature publishing group
Type	Journal article
Language	English
Publication date	2019

„Ferromagnetic-like behavior of Bi0.9La0.1FeO3-KBr nanocomposites /“