Impact of electric poling on structure, magnetism and ferroelectricity of 0.7PbFe0·5Nb0·5O3 -0.3BiFeO3 multiferroic

In this paper we have discussed the impact of electric poling on structure, magnetism and ferroelectricity of 0.7PbFe0·5Nb0·5O3 - 0.3BiFeO3 (PBFN) multiferroic. Magnetization data exhibit the presence of strong converse magneto electric coupling in a material. The temperature dependent Raman measurements demonstrate considerable changes in Raman scattering intensity and spectrum structure around TC, indicating a structural change around TC. The octahedral stretching vibration modes revealed a remarkable frequency shift below TN and the anomalies are owing to the coupling interaction between the spin-phonons. Changes in Raman modes and magnetization data support the hypothesis of converse magnetoelectric coupling. By poling, the improvement in ferroelectric domain ordering occurs and it was confirmed by P-E loops. We present the implications of our investigation on electric poling of PBFN multiferroic in the current interest of spintronics. •Changes in Raman modes and magnetization data support the hypothesis of converse magnetoelectric coupling.•Unpoled PBFNO exhibit broad and overlapping 10 active modes at room temperature, ranging from 100 to 1300 cm−1, at 147, 212, 255, 431, 479, 561, 700, 795,835 and 1112 cm−1. These peaks demonstrate considerable changes in Raman scattering intensity and spectrum structure around TC, indicating a structural change around TC. The octahedral stretching vibration modes revealed a remarkable frequency shift below the Neel temperature TN and the anomalies are owing to the coupling interaction between the spin-phonons.•By poling the improvement in ferroelectric domain ordering occurs and it was confirmed by P-E loops.•We present the implications of our investigation on electric poling of PBFNO in the current interest of spintronics.