TY - JOUR
T1 - Effect of excess lead on the structural and electrical characteristics of sol-gel synthesized RuO2/Pb(ZrxTi1−x)O3/RuO2
AU - Bag, Sankar Prasad
AU - Her, Jim Long
AU - Pan, Tung Ming
N1 - Publisher Copyright:
© 2016 Elsevier Ltd and Techna Group S.r.l.
PY - 2016/12/1
Y1 - 2016/12/1
N2 - In this study, we investigated the effect of excess lead on the structural and electrical characteristics of lead zirconate titanate [Pb(ZrxTi1−x)O3, PZT] thin films using the sol-gel spin coating method. X-ray diffraction, atomic force microscopy, X-ray photoelectron spectroscopy, and field-emission transmission electron microscopy were used to study the structural, morphological, chemical, and microstructural features, respectively, of these films as functions of the growth conditions (excess lead concentrations of 10, 20, and 25 mol%). The PZT thin film prepared at the 20 mol% condition exhibited the best electrical characteristics including a lower leakage current of 6×10−7 A/cm2 at an electric field of 50 kV/cm, a larger capacitance value of 1.92 μF/cm2 at a frequency of 1 kHz, and a higher remanent polarization of 20.1 μC/cm2 at a frequency of 5 kHz. We attribute this behavior to the optimal amount of excess lead in this PZT film forming a perovskite structure and suppressing the reaction of PZT film with RuO2 electrode.
AB - In this study, we investigated the effect of excess lead on the structural and electrical characteristics of lead zirconate titanate [Pb(ZrxTi1−x)O3, PZT] thin films using the sol-gel spin coating method. X-ray diffraction, atomic force microscopy, X-ray photoelectron spectroscopy, and field-emission transmission electron microscopy were used to study the structural, morphological, chemical, and microstructural features, respectively, of these films as functions of the growth conditions (excess lead concentrations of 10, 20, and 25 mol%). The PZT thin film prepared at the 20 mol% condition exhibited the best electrical characteristics including a lower leakage current of 6×10−7 A/cm2 at an electric field of 50 kV/cm, a larger capacitance value of 1.92 μF/cm2 at a frequency of 1 kHz, and a higher remanent polarization of 20.1 μC/cm2 at a frequency of 5 kHz. We attribute this behavior to the optimal amount of excess lead in this PZT film forming a perovskite structure and suppressing the reaction of PZT film with RuO2 electrode.
KW - Excess lead
KW - Lead zirconate titanate (PZT)
KW - RuO electrode
KW - Sol-gel
UR - http://www.scopus.com/inward/record.url?scp=85006001535&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2016.08.173
DO - 10.1016/j.ceramint.2016.08.173
M3 - 文章
AN - SCOPUS:85006001535
SN - 0272-8842
VL - 42
SP - 18402
EP - 18410
JO - Ceramics International
JF - Ceramics International
IS - 16
ER -