首页|Influence of a poling procedure on dynamics of ferroelectric domains in thin PbZr_(0.3)Ti_(0.7)O_3 film at low temperatures
Influence of a poling procedure on dynamics of ferroelectric domains in thin PbZr_(0.3)Ti_(0.7)O_3 film at low temperatures
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An experimental study of low temperature domain dynamics could provide information on a mechanism of domain wall motion at low temperatures in thin ferroelectric films。 For this purpose we use a piezoresponse force microscopy (PFM) technique and investigate the 180° ferroelectric domains growth in the temperature range 5 K - 295 K。 Domains were created by applying a dc voltage pulses between an atomic force microscopy (AFM) tip and a bottom electrode of a thin epitaxial PbZr_(0。3)Ti_(0。7)O_3 film。 Two different types of tips were used， a semiconducting tip with dopant conductivity and a tip with metallic coating to clarify an influence of poling procedure on the domain dynamics。 Created domains were then visualized and their in-plane sizes were measured with out-of-plane PFM。 Dependences of the lateral domain size on the duration and amplitude of dc voltage pulse were obtained。 Received experimental dependences were then fitted with logarithmic function with good accuracy。 This circumstance indicates on the thermally activated mechanism of domain growth and formation。 Temperature dynamics of the 180° ferroelectric domains growth does not depend on the AFM tip used in a poling procedure what allows us to conclude that the voltage transfer to the ferroelectric film does not significantly depend on the tip-film local contact properties。
ferroelectric domainslow temperature domain dynamicspiezoresponse force microscopy
Natalia V. Andreeva、Alexey V. Filimonov、Alexander F. Vakulenko、Sergey B. Vakhrushev
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Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Polytechnicheskaya, 29, Russia
Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Polytechnicheskaya, 29, Russia,St. Petersburg State University, 199034, Universitetskaya nab., 7-9, St. Petersburg, Russia
Asia school-conference on physics and technology of nanostructured materials
Vladivostok(RU)
Physics and technology of nanostructured materials III
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