TY - JOUR
T1 - Influence of thermal and electrical histories on domain structure and polarization switching in potassium-modified lead zirconate titanate ceramics
AU - Tan, Qi
AU - Viehland, Dwight
PY - 1998/2
Y1 - 1998/2
N2 - The dependence of domain evolution and polarization switching on thermal and electrical histories has been investigated for K1+-ion-modified lead zirconate titanate (PZT) ceramics by using hot-stage transmission electron microscopy and Sawyer-Tower polarization methods. In each case, the domains were very narrow, on the order of several hundred angstroms. In the aged condition, the domain structure was dominated by a "wavy" morphology. In the as-quenched condition, fine and straight 180° domains were found that extended across entire grains. In the field-cooled condition, fine and straight 70° and 110° domains were found. Corresponding polarization studies revealed double-loop characteristics in the as-quenched and aged conditions. In both these cases, the switchable polarization was much less than that of the base PZT composition. In the field-cooled condition, a single polarization loop was observed. However, the polarization-electric field (P-E) curve was skewed from the origin, and the polarization was not completely switchable on field reversal. These changes in domain stability and P-E properties have then been explained in terms of the dependence of a spatial distribution of polarizable defect complexes on thermal and electrical histories.
AB - The dependence of domain evolution and polarization switching on thermal and electrical histories has been investigated for K1+-ion-modified lead zirconate titanate (PZT) ceramics by using hot-stage transmission electron microscopy and Sawyer-Tower polarization methods. In each case, the domains were very narrow, on the order of several hundred angstroms. In the aged condition, the domain structure was dominated by a "wavy" morphology. In the as-quenched condition, fine and straight 180° domains were found that extended across entire grains. In the field-cooled condition, fine and straight 70° and 110° domains were found. Corresponding polarization studies revealed double-loop characteristics in the as-quenched and aged conditions. In both these cases, the switchable polarization was much less than that of the base PZT composition. In the field-cooled condition, a single polarization loop was observed. However, the polarization-electric field (P-E) curve was skewed from the origin, and the polarization was not completely switchable on field reversal. These changes in domain stability and P-E properties have then been explained in terms of the dependence of a spatial distribution of polarizable defect complexes on thermal and electrical histories.
UR - http://www.scopus.com/inward/record.url?scp=0031998766&partnerID=8YFLogxK
U2 - 10.1111/j.1151-2916.1998.tb02338.x
DO - 10.1111/j.1151-2916.1998.tb02338.x
M3 - 文章
AN - SCOPUS:0031998766
SN - 0002-7820
VL - 81
SP - 328
EP - 336
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 2
ER -