caa a22 4500 463220935 CHVBK 20180405153211.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10853-006-1037-0 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1037-0 Ferroelectric transitions in valence compensated Ba1− x La x Ti1− x Cr x O3 ceramics [Elektronische Daten] [R. Dwivedi, Parkash, Om, Devendra Kumar, K. Srivastava, P. Singh] An attempt has been made to investigate the solid solubility limit between barium titanate, BaTiO3 and lanthanum chromite, LaCrO3. Compositions with x≤0.15 have shown solid solution formation in the system Ba1−x La x Ti1−x Cr x O3. Compositions with 0.01 and 0.05 are found to have a tetragonal structure, whereas those with x=0.10 and 0.15 are found to have a cubic structure at room temperature. Dielectric measurements have been carried out at different frequencies in the temperature range 100-550K. Plots of εr versus temperature for composition with x=0.01 show dielectric anomalies at 376K (T C-T) and 275 (T T-O) where T C-T and T T-O denote the temperature for cubic to tetragonal and tetragonal to orthorhombic transition. Dielectric anomaly corresponding to the ferroelectric to paraelectric transition has been found to shift to lower temperatures with increasing concentration of lanthanum and chromium. For compositions with x≤0.05, T C has been found to be frequency independent while for x=0.10 and 0.15, T C has been found to be frequency dependent in a manner similar to relaxor ferroelectrics. Springer Science+Business Media, LLC, 2006 Dwivedi R. Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut Om Parkash, Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut Kumar Devendra Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut Srivastava K. Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut Singh P. Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/1(2007-01-01), 72-79 0022-2461 42:1<72 2007 42 10853 https://doi.org/10.1007/s10853-006-1037-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1037-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dwivedi R. Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut NATIONALLICENCE 700 1- Om Parkash Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut NATIONALLICENCE 700 1- Kumar Devendra Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut NATIONALLICENCE 700 1- Srivastava K. Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut NATIONALLICENCE 700 1- Singh P. Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/1(2007-01-01), 72-79 0022-2461 42:1<72 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer