Study of the effect of Mn doping on the BiFeO3 system

• Published in: Journal of physics. Condensed matter 2007-04, Vol.19 (13), p.136202-136202 (8)
• Main Authors: Kothari, Deepti, Raghavendra Reddy, V, Gupta, Ajay, Phase, D M, Lakshmi, N, Deshpande, S K, Awasthi, A M
• Format: Article
• Language: English
• Subjects: Antiferromagnetics; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Dielectric properties of solids and liquids; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Exact sciences and technology; Magnetic properties and materials; Magnetic resonances and relaxations in condensed matter, mössbauer effect; Magnetomechanical and magnetoelectric effects, magnetostriction; Mössbauer effect; other γ-ray spectroscopy; Permittivity (dielectric function); Physics; Studies of specific magnetic materials
• ISSN: 0953-8984; 1361-648X
• DOI: 10.1088/0953-8984/19/13/136202

In this work a Mn doped magnetoelectric BiFeO3 system is studied. X-ray diffraction (XRD), scanning electron microscopy, energy dispersive x-ray analysis (EDX), Mossbauer spectroscopy at room and high temperatures, differential scanning calorimetry (DSC), high temperature magnetization, dielectric constant measurements and x-ray photoelectron spectroscopy (XPS) are used to characterize the samples. The XRD result shows BiFeO3 as a major phase along with about 1-2% impurity phase. EDX shows the equi-atomic ratio of Bi and Fe site cations. Using DSC it is observed that the Neel temperature decreases with Mn doping. Using Mossbauer and XPS it is observed that Fe exists in the +3 oxidation state. The samples have an antiferromagnetic nature with Mn doping.