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Abnormal Poisson's ratio and Linear Compressibility in Perovskite Materials
Author(s) -
Huang C. W.,
Ren Wei,
Nguyen Viet Cuong,
Chen Zuhuang,
Wang Junling,
Sritharan T.,
Chen Lang
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201104676
Subject(s) - poisson distribution , auxetics , poisson's ratio , anisotropy , isotropy , compressibility , materials science , limit (mathematics) , perovskite (structure) , range (aeronautics) , degree (music) , condensed matter physics , orientation (vector space) , statistical physics , thermodynamics , crystallography , mathematical analysis , mathematics , composite material , physics , statistics , quantum mechanics , geometry , chemistry , acoustics
The Poisson's ratio of perovskites with a high degree of anisotropy can change from negative to positive and become much larger than the normally observed range of 0.2–0.4 and even greater than the isotropic upper limit 0.5 along certain crystallographic orientations. These results pave the way for a better understanding of elastic‐mediated physical properties of perovskites by engineering the orientation‐dependent Poisson's ratios.