Premium
Synthesis and Structure Analysis of Aurivillius Phases Pb 1‐x Bi 4‐+ Ti 1‐x Mn x O 15
Author(s) -
Prijamboedi B.,
Nugroho A. A.
Publication year - 2009
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200900160
Subject(s) - aurivillius , orthorhombic crystal system , chemistry , crystallography , eutectic system , phase (matter) , lattice constant , x ray crystallography , analytical chemistry (journal) , lamellar structure , crystal structure , diffraction , ferroelectricity , materials science , microstructure , dielectric , physics , optoelectronics , organic chemistry , chromatography , optics
Synthesis Pb 1‐x Bi 4+x Ti 4‐x Mn x O 15 compounds (0 ≤ × ≤ 1) were carried out by molten salts method using eutectic mixture of Na 2 SO 4 /K 2 SO 4 salts (1:1 molar ratio) as the flux. The samples were characterized by X‐ray powder diffraction and refined by Le Bail method using Rietica program. The refinement results revealed that the compounds with the composition 0 ≤ x ≤ 0.6 formed Aurivillius phase with the space group A2 1 am while the other composition ( x ≥ 0.8) showed another phase beside A2 1 am . The ratio b/a of the lattices constants for all the samples are larger than 1 indicating the direction of the orthorhombic along the b axis of their cells. The lattice parameters and volume of the unit cells decrease as the Mn content increasing from x = 0 to 0.6, for x ≥ 0.8 a second phase were observed. The morphologies of Pb 1‐x Bi 4+x Ti 4‐x Mn x O 15 samples were observed by SEM and show plate‐like aggregate crystals, typical of layered compounds belonging to the Aurivillius phase.