Browsing by Author "Seshadri, SB"
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- ItemAn in situ diffraction study of domain wall motion contributions to the frequency dispersion of the piezoelectric coefficient in lead zirconate titanate(American Institute of Physics, 2013-01-28) Seshadri, SB; Prewitt, AD; Studer, AJ; Damjanovic, D; Jones, JLThe contribution of non-180 degrees domain wall displacement to the frequency dependence of the longitudinal piezoelectric coefficient has been determined experimentally in lead zirconate titanate using time-resolved, in situ neutron diffraction. Under subcoercive electric fields of low frequencies, approximately 3% to 4% of the volume fraction of non-180 degrees domains parallel to the field experienced polarization reorientation. This subtle non-180 degrees domain wall motion directly contributes to 64% to 75% of the magnitude of the piezoelectric coefficient. Moreover, part of the 33 pm/V decrease in piezoelectric coefficient across 2 orders of magnitude in frequency is quantitatively attributed to non-180 degrees domain wall motion effects. © 2013, American Institute of Physics.