Dielectric behaviour of BaTi sub(1-x)Zr sub(x)O sub(3) ceramics obtained by means of a solid state and mechanochemical synthesis

• Published in: Ferroelectrics Vol. 497; no. 1; pp. 62 - 68
• Main Authors: Dulian, P, Garbarz-Glos, B, Bak, W, Antonova, M, Kajtoch, C, Wieczorek-Ciurowa, K, Noga, H
• Format: Journal Article
• Language: English
• Published: 20.06.2016
• Subjects: Ceramics; Dielectric properties; Dielectrics; Mechanochemistry; Permittivity; Scanning electron microscopy; Solid state; Synthesis
• ISSN: 0015-0193; 1563-5112
• DOI: 10.1080/00150193.2016.1160737

In this study the comparison of dielectric behaviour of BaTi sub(1-x)Zr sub(x)O sub(3) (BTZx) ceramic samples prepared by means of a solid state and mechanochemical synthesis was presented. A single phase of perovskite structure was identified in the samples at room temperature. No significant impurities were detected in an EDS spectrum and the samples had a good stoichiometric ratio. The morphology of the investigated samples was characterized by a scanning electron microscopy (SEM). The investigation of dielectric properties of the BTZx samples within the temperature range from 140 K to 600 K was performed by means of a dielectric spectroscopy method at the frequency ranging from 0.1 Hz to 10 MHz. The temperature dependences of real part of dielectric permittivity showed the changes of the character of the paraelectric-ferroelectric (PE-FE) phase transition for the ceramic samples obtained by means of both methods.