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Synthesis of four-layered Aurivillius compound doped with Nd 3+ and Mn 4+ cations, SrBi 3.5 Nd 0.5 Ti 4-x Mn x O 15 ( x = 0; 0.5; 1) was carried out using molten salt method with a mixture of Na 2 SO 4 /K 2 SO 4 as a flux. The synthesized products were characterized using X-ray diffraction (XRD) and refined by Le Bail technique. The results of XRD analysis show that the four-layered Aurivillius compound formed, however there are additional peaks identified as perovskite and Bi 7.68 Ti 0.32 O 12.16 phases for x = 0 and perovskite and Sr 4 Ti 3 O 10 phases for x = 0.5 and 1. The results of refinement show that four-layered Aurivillius phase formed has orthorhombic symmetry with A2 1 am space group. Scanning Electron Microscopy (SEM) shows the plate like morphology that are characteristic of Aurivillius compound. Dielectric constant of the samples show increasing value as increasing of Mn 4+ concentration.

SYNTHESIS AND DIELECTRIC PROPERTIES OF FOUR-LAYERED AURIVILLIUS SrBi4Ti4O15 DOPED Nd3+ AND Mn4+