caa a22 4500 463231864 CHVBK 20180405153244.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10853-007-1904-3 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1904-3 Effect of A-site dopant on the piezoresistive characteristics of La0.8Sr0.2MnO3 ceramics [Elektronische Daten] [Vaneet Sharma, Maria Hossu, Woo Lee, Ali Koymen, Shashank Priya] This letter reports the effect of the A-site doping (2, 4, and 6mol% Bi and Li) on the piezoresistance phenomenon in La0.8Sr0.2MnO3 (LSMO) polycrystalline ceramics. The fractional change in resistivity was found to be nominal for Li-modified samples but samples modified with 4 and 6mol% Bi2O3 exhibited 1.8% and 2.3% fractional change in resistivity $$ [(\rho _{o} - \rho _{\sigma } )/\rho _{o} ] $$ at 19.2MPa which is significantly higher than that for pure LSMO. The enhancement in piezoresistive phenomenon is attributed to distortion of Mn-O bond due to substitution of smaller ion on to La-site. All the samples showed a sudden increase in resistivity with applied stress in the range of 0.5-2MPa and the behavior was found to saturate as the magnitude of applied stress increases. Magnetic measurements as a function of field and temperature were conducted to confirm the A-site substitution. Springer Science+Business Media, LLC, 2007 Sharma Vaneet Department of Materials Science and Engineering, The University of Texas Arlington, 76019, Arlington, TX, USA aut Hossu Maria Department of Physics, The University of Texas Arlington, 76019, Arlington, TX, USA aut Lee Woo Automation and Robotics Research Institute, 76118, Fort Worth, TX, USA aut Koymen Ali Department of Physics, The University of Texas Arlington, 76019, Arlington, TX, USA aut Priya Shashank Department of Materials Science and Engineering, The University of Texas Arlington, 76019, Arlington, TX, USA aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/23(2007-12-01), 9841-9844 0022-2461 42:23<9841 2007 42 10853 https://doi.org/10.1007/s10853-007-1904-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1904-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sharma Vaneet Department of Materials Science and Engineering, The University of Texas Arlington, 76019, Arlington, TX, USA aut NATIONALLICENCE 700 1- Hossu Maria Department of Physics, The University of Texas Arlington, 76019, Arlington, TX, USA aut NATIONALLICENCE 700 1- Lee Woo Automation and Robotics Research Institute, 76118, Fort Worth, TX, USA aut NATIONALLICENCE 700 1- Koymen Ali Department of Physics, The University of Texas Arlington, 76019, Arlington, TX, USA aut NATIONALLICENCE 700 1- Priya Shashank Department of Materials Science and Engineering, The University of Texas Arlington, 76019, Arlington, TX, USA aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/23(2007-12-01), 9841-9844 0022-2461 42:23<9841 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer