Nanocomposites and nanomaterials

Structure, ferromagnetism and ferroelectricity of nanocomposite multiferroic
Song Chunrui1, Liedienov N.A.1,2, Fesych I.V.3, Pashchenko A.V.1,2,4, Levchenko G.G.1,2
1 State Key Laboratory of Superhard Materials, International Center of Future Science, Jilin University. Qianjin Street, 2699, Changchun-130012, China.
E-mail: nikita.ledenev.ssp@gmail.com
2 Donetsk Institute for Physics and Engineering named after O.O. Galkin, NAS of Ukraine. Prospect Nauki, 46, Kyiv-03028, Ukraine.
3 Taras Shevchenko National University of Kyiv. Volodymyrska Street, 60, Kyiv-01030, Ukraine.
4 Institute of Magnetism, NAS of Ukraine and MES of Ukraine. Vernadsky Blvd., 36, Kyiv-03142, Ukraine.

Multiferroics belong to multifunctional materials which show great application potential in high-performance information storage and processing, magnetoelectric and spintronic devices [1]. One of the crucial problems is to obtain a strong magnetoelectric coupling therein. The composites based on the ferroelectric Bi0.9La0.1FeO3 (BLFO) and ferromagnetic Mn0.6Zn0.3Fe2.1O4(MZFO) materials are the excellent alternative to multiferroics. Here, we studied the 0.8BLFO-0.2MZFO composite using XRD, SEM, TEM, EDS, magnetic and ferroelectric methods. It was found that the composite consists of rhombohedral polar R3c and cubic ferrospinel Fd3m phases. According to SEM and TEM, an average particle size for BLFO and MZFO is 160 and 12 nm, respectively. According to Figures, an increasing the ferromagnetism and ferroelectricity is observed in a multiferroic nanocomposite modified with high-permeability magnetic phase. Such an increase in magnetoelectric coupling opens up new possibilities for using multiferroics in weak magnetic and electric fields.

1.	Opel M. Spintronic oxides grown by laser-MBE // J Phys D: Appl. Phys.-2012.-45.-P. 31.