Title: Multiferroic behaviours of Mn-doped Bi₄NdTi₃FeO₁₅ ceramics

Authors: Qingqing Ma; Yahui Shu; Lin Cao; Zhenzhong Ding; Feng Huang; Xiaoqin Chen; Fujun Yang; Xiangbin Zeng

Addresses: Hubei Key Laboratory of Ferro and Piezoelectric Materials and Devices, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan, 430062, China ' Hubei Key Laboratory of Ferro and Piezoelectric Materials and Devices, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan, 430062, China ' Hubei Key Laboratory of Ferro and Piezoelectric Materials and Devices, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan, 430062, China ' Hubei Key Laboratory of Ferro and Piezoelectric Materials and Devices, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan, 430062, China ' Hubei Key Laboratory of Ferro and Piezoelectric Materials and Devices, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan, 430062, China ' Hubei Key Laboratory of Ferro and Piezoelectric Materials and Devices, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan, 430062, China ' Hubei Key Laboratory of Ferro and Piezoelectric Materials and Devices, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan, 430062, China ' School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China

Abstract: Ceramics of Mn-doped Bi₄NdTi₃Fe_1−xMn_xO₁₅ (Mn_x, x = 0.1, 0.3, 0.5 and 0.7) were synthesised by a multicalcination procedure. The substitution of Mn for Fe does not change the layered perovskite structure of Bi₄NdTi₃FeO₁₅ (BNTF) except that small amounts of Mn₃O₄ appear in the samples. Plate-like morphology of the grains which is characteristic for layer-structure Aurivillius compounds was clearly observed for all the Mn_x samples. The dielectric, ferroelectric and magentic properties of the samples were studied and it is found that the doping of Mn weakened the electric properties but improved the magnetic property. Especially, in Mn_0.3 sample, the 2M_r value is about ten times of those in other samples. The present work is meaningful for compositional design of room temperature (RT) multiferroic materials based on four-layer structured Aurivillius compounds.

Keywords: Aurivillius phase; multiferroic; Mn-doping; Bi₄NdTi₃FeO₁₅; BNTF.

DOI: 10.1504/IJNM.2019.097234

International Journal of Nanomanufacturing, 2019 Vol.15 No.1/2, pp.3 - 11

Received: 23 Apr 2017
Accepted: 26 Oct 2017
Published online: 07 Jan 2019 *

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