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Atomic Mechanism of Predictable Phase Transition in Dual‐Phase H 2 Ti 3 O 7 /TiO 2 (B) Nanofiber: An In Situ Heating TEM Investigation
Author(s) -
Lei Yimin,
Sun Jie,
Liu Hongwei,
Cheng Xuan,
Chen Fuyi,
Liu Zongwen
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201403272
Subject(s) - monoclinic crystal system , materials science , transmission electron microscopy , crystallography , nanocrystal , phase transition , phase (matter) , in situ , crystal structure , nanotechnology , condensed matter physics , chemistry , physics , organic chemistry
The phase transition from H 2 Ti 3 O 7 to TiO 2 (B) in a 1D single nanocrystal of H 2 Ti 3 O 7 was observed by in situ heating in a transmission electron microscope experimentally. The results indicate a typical monoclinic‐to‐monoclinic crystallographic orientation relationship between the two phases. Moreover, the fundamental building blocks and invariant deformation element model were both adopted to reveal the atomic mechanism and predict the crystallographic orientation relationship quantitatively for the phase transition. The prediction was precisely consistent with TEM results.