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Size‐Controlled Single‐Crystal Perovskite PbTiO 3 Nanofibers from Edge‐Shared TiO 6 Octahedron Columns
Author(s) -
Liu Zhenya,
Ren Zhaohui,
Xiao Zhen,
Chao Chunying,
Wei Xiao,
Liu Yong,
Li Xiang,
Xu Gang,
Shen Ge,
Han Gaorong
Publication year - 2012
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201200795
Subject(s) - tetragonal crystal system , nanofiber , octahedron , hydrothermal circulation , annealing (glass) , perovskite (structure) , ferroelectricity , materials science , nanotechnology , crystal structure , crystallography , chemical engineering , optoelectronics , chemistry , composite material , engineering , dielectric
Tetragonal perovskite PbTiO 3 nanofibers are prepared by a two‐step method comprising synthesis of pre‐perovskite (PP) PbTiO 3 nanofibers by a hydrothermal method followed by annealing at 680 °C. Adjustment of the Pb/Ti molecular ratio in the hydrothermal reaction controls the size of the PP nanofibers and hence of the perovskite PbTiO 3 nanofibers. Ferroelectric properties remain in fibers of diameter 13 nm.