Investigation of the zeta potential, particle size and electrical properties of erbium doped SBLNN ceramics

• Published in: Ferroelectrics Vol. 517; no. 1; pp. 118 - 127
• Main Authors: Viswarupachary, P., Rao, ChVenkata, VPrasad, T. N. V. K., Mouli, K. Chanda
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 10.09.2017; Taylor & Francis Ltd
• Subjects: Barium; Ceramics; Curie temperature; Electrical properties; electrical studies; Erbium; Ferroelectric materials; Ferroelectricity; Lithium; Orthorhombic phase; Particle size; Phase transitions; Sodium; Strontium; Structural; Transition temperature; Transition temperatures; Tungsten; Tungsten bronze; Zeta potential
• ISSN: 0015-0193; 1563-5112
• DOI: 10.1080/00150193.2017.1370271

Trivalent erbium modified Strontium Barium Lithium Sodium Niobate ferroelectric ceramics with Tungsten bronze (TB) filled structure were synthesized by the conventional solid state ceramic technique. The samples were calcined twice at 950°C and reported with orthorhombic phase (XRD) in Er 3+ : SBLNN (x = 0.00 to 0.10). The zeta potential and particle size have been measured by using particle analyzer and observed from −35.7 to -53.3 mV and 261.7 nm to 342.5 nm respectively. Evident from the zeta potential, samples have good stability. The maximum sintered density was observed to 95% of ρ th . The ferroelectric Curie temperature (Tc) is considerably lowered by the induction of Er 3+ ion. It is observed that the ferro- para electric phase transition temperature and Tan δ decreased with increase of Er 3+ doping concentration. Observed the highest values of ϵ RT and ϵ TC at x = 0.06. Measurement of resistivity studies as a function of temperature (PTCR) at constant voltage 10 V/cm applied and suitable for pyroelectric applications.