Synthesis, Structure and Dielectric Properties of Bi1-xNdxFeO3

• Published in: Archives of metallurgy and materials 2011-01, Vol.56 (4), p.1119
• Main Authors: Dzik, J., Bernard, H., Osińska, K., Lisińska-Czekaj, A., Czekaj, D.
• Format: Article
• Language: English
• Subjects: Ceramic powders; Ceramics; Chemical composition; Crystal structure; Crystallinity; Data analysis; Dielectric properties; Equivalent circuits; Heat treatment; Mixed oxides; Morphology; Neodymium; Phase transitions; Room temperature; Scanning electron microscopy; Solid solutions; Spectrum analysis; Stoichiometry; Symmetry; Temperature
• ISSN: 1733-3490; 2300-1909
• DOI: 10.2478/v10172-011-0125-6

Synthesis, Structure and Dielectric Properties of Bi[1-x]Nd[x]FeO[3] In the present study Bi[1-x]Nd[x]FeO[3] (x=0.1-0.4) ceramic powders were synthesized by the conventional mixed oxide method. Stoichiometric mixture of the powders was thermally analysed with Netzsch STA-409 system so parameters of the thermal treatment were determined. Morphology of the ceramic material was observed by scanning electron microscopy, whereas the crystalline structure was studied by X-ray diffraction method. It was found that chemical composition of the ceramic samples corresponds well to the initial stoichiometry of the ceramic powders. An increase in neodymium content caused a decrease in the average size of the ceramic grains. Crystalline structure of Bi[1-x]Nd[x]FeO[3] ceramics for x ≤0.2 was decribed by rhombohedral symmetry whereas for [x] ≥0.3 by orthorhombic symmetry. Dielectric properties were studied within a range of frequency [v]=20Hz - 1MHz at room temperature by impedance spectroscopy. The Kramers-Kronig data validation test was employed in the present impedance data analysis. Impedance data were fitted to the corresponding equivalent circuit using the CNLS fitting method.