SINTESIS SMART MATERIAL BERFASA AURIVILLIUS LAPIS EMPAT PbBi4Ti4O15 YANG DIDOPING DENGAN KATION La3+ DAN Mn3+

FARADIBAH, FARADIBAH (2016) SINTESIS SMART MATERIAL BERFASA AURIVILLIUS LAPIS EMPAT PbBi4Ti4O15 YANG DIDOPING DENGAN KATION La3+ DAN Mn3+. Diploma thesis, UNIVERSITAS ANDALAS.

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Abstract

Smart material is a bunch of new material that developed to address problems in this life or a future time. This material has more than one property as a whole like magnetic property that can be controlled by changing the electric field and vice versa. Multiferroic compound is a compound that has ferroelectric, ferromagnetic and ferroelastic properties in a single phase. One of the spesific application from this multiferroic material is data storage material so that these materials also can be called as smart material. One of material that can be called as multiferroic is Aurivillius phase because it's structure can be built by cation that has both ferroelectric and magnetic properties in a phase. Synthesis of four layer Aurivillius compound PbBi4Ti4O15 that is doped with cation La3+ and Mn3+ has been done with molten salt method using mixture of Na2SO4/K2SO4. Product of synthesis is characterised with X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Structure refinement is done with Le Bail technique toward x-ray diffraction. Compound formula that is worked is PbBi4-xLaxTi4O15 with x = 0,5 and 1; Pb1-yBi3,5+yLa0,5Ti4-yMnyO15 and Pb1-yBi3+yLaTi4-yMnyO15 (y = 0,5 and 1). According to refinement result, it reveals that synthesis product is a single-phase four layer Aurivillius compound for sample PbBi4-xLaxTi4O15 (x = 0,5 and 1) and Pb1-yBi3,5+yLa0,5Ti4-yO15 (y = 0,5). Meanwhile for the other sample there are additional phases, which is Pb1,05Bi2,09O4,17 phase (x = 0,5 ; y = 1 and x = 1 ; y = 1) and Pb1,07Mn8O16 phase (x = 1 ; y = 0,5). Four layer Auriviliius compound's phase structure which is formed has orthorhombic symmetry with A21am space group. Morphology of synthesis product shows plate-like morphology which is a characteristic of Aurivillius compound. Key word : Smart material, Multiferroic, Aurivillius, molten salt, Le Bail technique, Refinement.

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