Zulhadjri, B. Prijamboedi, A.A. Nugroho, N. Mufti, A. Fajar, T.T.M. Palstra, Ismunandar
Doping of manganese (Mn3/Mn4) into the Aurivillius phase Pb1-xBi4xTi4-xMnxO 15 was carried out using the molten salt technique for various Mn concentrations (x=0, 0.2, 0.4, 0.6, 0.8, and 1). Single phase samples could be obtained in the composition range with x up to 0.6 as confirmed by X-ray and neutron diffraction analysis. Dielectric measurements show a peak at 801, 803, 813 and 850 K for samples with x=0, 0.2, 0.4, and 0.6, respectively, related to the ferroelectric transition temperature (Tc). The main contribution of the in-plane polarization for x≤0.2 which was calculated from the atomic positions obtained by the structure analysis is the dipole moment in the Ti(1)O6 layer; however, for x≥0.4 the polarization originates from the dipole moment in the Ti(2)O6 layer. Mn doping in the Pb 1-xBi4xTi4-xMnxO15 does not show any long range magnetic ordering. © 2011 Elsevier Inc. All rights reserved.
Inorganic and Physical Chemistry Group, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung, Jl. Ganesha No. 10, Indonesia; Magnetic and Photonic Physics Research-Group, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung, Jl. Ganesha No. 10, Indonesia; Physics Department, Universitas Negeri Malang, Malang 65145, Jl. Surabaya 6, Indonesia; Centre for Technology of Nuclear Industry Materials BATAN Puspiptek Serpong, Tangerang, Indonesia; Solid State Materials Laboratory, Zernike Institute for Advanced Materials, Rijksuniversiteit Groningen, 9747AG Groningen, Nijenborgh 4, Netherlands
