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Large and Stable Shape Memory Effect Realized by Defect Dipoles in Acceptor-doped Ferroelectric Ceramics (2015)

Yangxi Yan, Yujun Feng

Wiley

In: Journal of the American Ceramic Society

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Publication Date: 2015-09-25

Description: A large and stable shape memory effect has been observed in 0.6 wt% Mn-doped (Pb 0.99 Nb 0.02 )[(Zr 0.70 Sn 0.30 ) 0.52 Ti 0.48 ] 0.98 O 3 (Mn:PNZST) ceramics after being poled at high temperature. A maximum shape memory of 0.41% was achieved. This effect is related to the preferentially oriented defect dipoles along the poling direction after poling at high temperature and electric field. Furthermore, the shape memory effect is stable after 10 4 electric cycles at 30 kV/cm. The shape memory piezoelectric actuator may be fabricated using this kind of material.

Print ISSN: 0002-7820

Electronic ISSN: 1551-2916

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Published by Wiley

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