caa a22 4500 463229452 CHVBK 20180405153237.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s10853-006-0985-8 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0985-8 Effect of simultaneous substitution of La and Mn on dielectric behavior of barium titanate ceramic [Elektronische Daten] [Parkash, Om, Devendra Kumar, R. Dwivedi, K. Srivastava, Prakash Singh, Sindhu Singh] A few compositions in the valence compensated system Ba1−x La x Ti1−x Mn x O3 were synthesized by solid-state ceramic method to study the effect of co-doping lanthanum and manganese in equimolar amounts on dielectric behavior of BaTiO3. Compositions with x≤0.10 have shown solid solution formation. Compositions with x≤0.05 are found to have tetragonal structure at room temperature while composition with x=0.10 is cubic. Plots of relative dielectric constant, εr versus temperature for composition with x=0.01 show dielectric anomalies around 376±2, 264±2 and 179±2K which correspond to cubic to tetragonal (T C-T), tetragonal to orthorhombic (T T-O) and orthorhombic to rhombohedral (T O-R) transition, respectively, similar to BaTiO3. Curie temperature has been found to decrease with increasing concentration of lanthanum and manganese simultaneously in barium titanate. The broadening in the dielectric peak at cubic to tetragonal (T C-T) transition temperature increases with increasing x. For x=0.10, only one anomaly at 100K is observed in its εr versus T plots. The observation of this single anomaly may be due to pinching effect of the substitutions on the three phase transitions. Springer Science+Business Media, LLC, 2007 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 Dwivedi R. Department of Physics, Jaypee Institute of Information Technology, 201307, Noida, India aut Srivastava K. Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut Singh Prakash Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut Singh Sindhu Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/14(2007-07-01), 5490-5496 0022-2461 42:14<5490 2007 42 10853 https://doi.org/10.1007/s10853-006-0985-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0985-8 text/html Onlinezugriff via DOI 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- Dwivedi R. Department of Physics, Jaypee Institute of Information Technology, 201307, Noida, 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 Prakash Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut NATIONALLICENCE 700 1- Singh Sindhu Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, 221 005, Varanasi, India aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/14(2007-07-01), 5490-5496 0022-2461 42:14<5490 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer