caa a22 4500 463213068 CHVBK 20180405153147.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s00339-007-4208-1 doi (NATIONALLICENCE)springer-10.1007/s00339-007-4208-1 Structural and dielectric characterization of Sr substituted Ba(Zr,Ti)O3 based functional materials [Elektronische Daten] [S. Bhaskar Reddy, K. Prasad Rao, M.S. Ramachandra Rao] Single phase Sr substituted BaZr0.1Ti0.9O3 (also known as BZT) ceramics with a formula Ba1-xSrxZr0.1Ti0.9O3 (x=0.10, 0.20, 0.30, 0.40 and 0.50) are prepared using a solid state reaction of mixed oxides at 1250°C for 15h. Analysis of XRD patterns of the ceramic powders show that Sr substitutes into Ba sites and reduces the lattice parameter. The powders are sintered at 1600°C for 6h to investigate the microstructure and functional properties. It is found that strontium substitution significantly modifies the microstructure and greatly influences the dielectric properties. The increase in Sr content reduces the ceramic grain size and results in spherical grains. With an increase in Sr content, the Curie temperature is lowered, and the relative permittivity maximum is increased and broadened. In Ba1-xSrxZr0.1Ti0.9O3 with x=0.30, the relative permittivity reached a maximum of 26600 and with further increase of Sr content, the relative permittivity is lowered and the phase transition is found to be broad and diffused. The ferroelectric hysteresis characteristics are discussed in detail. Springer-Verlag, 2007 Bhaskar Reddy S. Materials Science Research Centre and Department of Physics, Indian Institute of Technology Madras, 600036, Chennai, India aut Prasad Rao K. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, 600036, Chennai, India aut Ramachandra Rao M.S. Materials Science Research Centre and Department of Physics, Indian Institute of Technology Madras, 600036, Chennai, India aut Applied Physics A Springer-Verlag 89/4(2007-12-01), 1011-1015 0947-8396 89:4<1011 2007 89 339 https://doi.org/10.1007/s00339-007-4208-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-4208-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bhaskar Reddy S. Materials Science Research Centre and Department of Physics, Indian Institute of Technology Madras, 600036, Chennai, India aut NATIONALLICENCE 700 1- Prasad Rao K. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, 600036, Chennai, India aut NATIONALLICENCE 700 1- Ramachandra Rao M.S. Materials Science Research Centre and Department of Physics, Indian Institute of Technology Madras, 600036, Chennai, India aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 89/4(2007-12-01), 1011-1015 0947-8396 89:4<1011 2007 89 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer