Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17100
Title: Cryogenic dielectric and piezoelectric activities in rhombohedral (1 - X)Pb(Mg1/3Nb2/3)O3-xPbTiO3 single crystals with different crystallographic orientations
Authors: Wang, F
Or, SW 
Zhao, X
Luo, H
Issue Date: 2009
Publisher: Institute of Physics Publishing
Source: Journal of physics. D, Applied physics, 2009, v. 42, no. 18, 182001 How to cite?
Journal: Journal of physics. D, Applied physics 
Abstract: We report the cryogenic dielectric and piezoelectric activities in [0 0 1]-, [1 1 0]- and [1 1 1]-oriented rhombohedral (1 - x)Pb(Mg 1/3Nb2/3)O3-xPbTiO3 single crystals for temperatures down to -200 °C. Unusual dielectric relaxation resulting from collective pinning of randomly distributed point defects to ferroelectric macrodomain walls is observed instead of a phase transition in all the poled crystals below -150 °C rather than in the unpoled ones. Stiffening of the poled crystals by the cryogenic temperature-induced pinning effect leads to a characteristic decrease in the piezoelectric coefficient (d31) and the compliance coefficient ( ), along with a similar quantitative increase in frequency constant (N31). An almost temperature-independent property region is revealed in a wide temperature range of -50 to -150 °C, enabling applications of the crystals in cryogenic fields.
URI: http://hdl.handle.net/10397/17100
ISSN: 0022-3727
EISSN: 1361-6463
DOI: 10.1088/0022-3727/42/18/182001
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