TY - JOUR
T1 - Influence of mobile vs. randomly quenched impurities on ferroelectric phase transformations
AU - Tan, Qi
AU - Li, Jie Fang
AU - Viehland, Dwight
N1 - Funding Information:
This work was supported by the Office of Naval Research (ONR) under contract No. NOOO14-95-1-0805 and by Naval Undersea Warfare Center contract No. N66604-9542-1536. The use of the facilities in the Center for Microanalysis in Materials Research Laboratory at the University of Illinois at Urbana-Champaign is gratefully acknowledged.
PY - 1998
Y1 - 1998
N2 - A comparative study of the influence of both mobile and randomly quenched impurities and their associated defect complexes on ferroelectric phase transformations in lead zirconate titanate ceramics has been performed by dielectric spectroscopy and transmission electron microscopy. These investigations have shown a strong dependence of the structure-property relations on the mobility of impurities and/or defect complexes in the temperature range near and below the phase transformation. Impurities-defects which are mobile until temperatures below the transformation are believed to preferentially locate near domain boundaries, resulting in polarization pinning. For these compositions, no evidence of relaxor ferroelectric behavior was observed. However, for the compositions whose impurities-defects were essentially immobile from temperatures above the ferroelectric phase transformation, relaxor behavior and polar nanodomains were found. Studies of the influence of electrical and thermal histories on properties provided additional insights into the influence of impurity-defect mobility.
AB - A comparative study of the influence of both mobile and randomly quenched impurities and their associated defect complexes on ferroelectric phase transformations in lead zirconate titanate ceramics has been performed by dielectric spectroscopy and transmission electron microscopy. These investigations have shown a strong dependence of the structure-property relations on the mobility of impurities and/or defect complexes in the temperature range near and below the phase transformation. Impurities-defects which are mobile until temperatures below the transformation are believed to preferentially locate near domain boundaries, resulting in polarization pinning. For these compositions, no evidence of relaxor ferroelectric behavior was observed. However, for the compositions whose impurities-defects were essentially immobile from temperatures above the ferroelectric phase transformation, relaxor behavior and polar nanodomains were found. Studies of the influence of electrical and thermal histories on properties provided additional insights into the influence of impurity-defect mobility.
UR - http://www.scopus.com/inward/record.url?scp=0031705837&partnerID=8YFLogxK
U2 - 10.1080/00150199808009164
DO - 10.1080/00150199808009164
M3 - 会议文章
AN - SCOPUS:0031705837
SN - 0015-0193
VL - 206-207
SP - 275
EP - 291
JO - Ferroelectrics
JF - Ferroelectrics
IS - 1 -4; 1-2
T2 - Proceedings of the 1997 Williamsburg Workshop on Ferroelectrics
Y2 - 2 February 1997 through 5 February 1997
ER -