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Observation of mechanical fracture and corresponding domain structure changes of polycrystalline PbTiO 3 nanotubes
Author(s) -
Choi Hyunwoo,
Hong Seungbum,
Kim Yunseok,
Kim Myungjun,
Sung TaeHyun,
Shin Hyunjung,
No Kwangsoo
Publication year - 2011
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201004495
Subject(s) - piezoresponse force microscopy , ferroelectricity , crystallite , hysteresis , materials science , anatase , phase (matter) , composite material , gas phase , nanotechnology , crystallography , condensed matter physics , chemistry , optoelectronics , physics , metallurgy , biochemistry , organic chemistry , photocatalysis , dielectric , catalysis
PbTiO 3 (PTO) nanotubes (NTs) were synthesized at various temperatures by gas phase reaction between PbO gas and anatase TiO 2 NTs and characterized by piezoresponse force microscopy (PFM). PTO ferroelectric phase was synthesized at as low as 400 °C as evidenced by PFM domain images and piezoresponse hysteresis loop measurement. Furthermore, the PTO NTs fabricated at above 500 °C underwent mechanical fracture through development of nanocracks due to grain growth, leading to ferroelectric domains with larger size and lower aspect ratio. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)