Multiferroic behaviours of Mn-doped Bi4NdTi3FeO15 ceramics
by Qingqing Ma; Yahui Shu; Lin Cao; Zhenzhong Ding; Feng Huang; Xiaoqin Chen; Fujun Yang; Xiangbin Zeng
International Journal of Nanomanufacturing (IJNM), Vol. 15, No. 1/2, 2019

Abstract: Ceramics of Mn-doped Bi4NdTi3Fe1−xMnxO15 (Mnx, 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 Mnx 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 Mn0.3 sample, the 2Mr 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.

Online publication date: Mon, 07-Jan-2019

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