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X‐ray Studies of Ferroelectric Cathodes
Author(s) -
Zhang Shuren,
Cai Xumei,
Zhong Chaowei,
Zhu Wenyi
Publication year - 2000
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2000.tb01381.x
Subject(s) - ferroelectricity , polarization (electrochemistry) , materials science , lanthanum , electron , lead zirconate titanate , cathode , diffraction , doping , analytical chemistry (journal) , electron density , optics , optoelectronics , dielectric , chemistry , inorganic chemistry , physics , chromatography , quantum mechanics
Ferroelectric electron emission has two possible sources: rapid polarization switching and surface plasma discharge. The present paper uses an X‐ray diffraction (XRD) method to support the theory of rapid polarization switching for lead zirconate titanate samples. A decrease in the 002 peak value and an increase in the 200 peak value were observed after electron emission in two types of samples, which were doped with lanthanum and neodymium. A comparison of the XRD data for the samples showed that a high‐density electron emission was related to a high‐value polarization switch. These results were consistent with the theory of rapid polarization switching.