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Intrinsic multiferroics in an individual single-crystalline Bi5Fe0.9Co0.1Ti3O15 nanoplate

Abstract

In recent years, much attention has been paid to layer-structured Bi4Bim-3Fem-3-xMxTi3O3m+3 (BFMTO, M=Co, Mn) compounds due to their potential as high temperature single phase multiferroic materials. However, BFMTO single crystals have been rarely reported in the past, though that they are better candidates for studying corresponding intrinsic multiferroics as well as the platform for making future devices, due to their structural complexity and difficulties in fabrication. In this article, Bi5Fe0.9Co0.1Ti3O15 single-crystalline nanoplates were synthesized by the hydrothermal method. Ferromagnetic domain structure in the nanoplate was investigated by the electron holography. Denser phase contours were observed and the closed magnetic flux lines indicated a significant magnetic interaction between the neighboring nanoplates, which proved the ferromagnetic nature of the sample. Furthermore, M-H loops of the sample were also measured, in which the ferromagnetic Curie temperature reaches ~ 730.2 K. Besides, ferroelectric domains were also detected by a piezoresponse force microscope. All above results indicate the first verification of the room temperature (RT) multiferroic in such single crystals, which will be meaningful to both future devices and understanding the underline physics.

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Publication details

The article was received on 10 Jun 2017, accepted on 13 Sep 2017 and first published on 14 Sep 2017


Article type: Communication
DOI: 10.1039/C7NR04141A
Citation: Nanoscale, 2017, Accepted Manuscript
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    Intrinsic multiferroics in an individual single-crystalline Bi5Fe0.9Co0.1Ti3O15 nanoplate

    T. Chen, D. Meng, Z. Li, J. F. Chen, Z. Lei, W. Ge, S. Sun, D. Sun, M. Liu and Y. lu, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR04141A

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