Stress-modulated relaxor-to-ferroelectric transition in lead-free (Na1/2Bi1/2)TiO3-BaTiO3 ferroelectrics

Schader, Florian H., Wang, Zhiyang, Hinterstein, Manuel, Daniels, John E. and Webber, Kyle G. 2016, Stress-modulated relaxor-to-ferroelectric transition in lead-free (Na1/2Bi1/2)TiO3-BaTiO3 ferroelectrics, Physical review B, vol. 93, no. 13, pp. 134111-1-134111-11, doi: 10.1103/PhysRevB.93.134111.

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Title Stress-modulated relaxor-to-ferroelectric transition in lead-free (Na1/2Bi1/2)TiO3-BaTiO3 ferroelectrics
Formatted title Stress-modulated relaxor-to-ferroelectric transition in lead-free (Na1/2Bi1/2)TiO3-BaTiO3 ferroelectrics
Author(s) Schader, Florian H.
Wang, Zhiyang
Hinterstein, Manuel
Daniels, John E.
Webber, Kyle G.
Journal name Physical review B
Volume number 93
Issue number 13
Article ID 134111
Start page 134111-1
End page 134111-11
Total pages 11
Publisher American Physical Society
Place of publication College Park, Md.
Publication date 2016-04-01
ISSN 2469-9950
Summary The effect of external mechanical fields on relaxor 0.94 (Na1/2Bi1/2)TiO3−0.06 BaTiO3 was investigated by means of temperature- and stress-dependent dielectric constant measurements between 223 and 673 K. Analogous to previous investigations that showed an electric-field-induced ferroelectric long-range order in relaxor ferroelectrics, we show that compressive stress can also result in the transition to the long-range ferroelectric order, marked by the formation of an anomaly in the permittivity-temperature curves and a nonlinear, remanent change in permittivity during mechanical loading. In situ stress-dependent high-energy x-ray diffraction experiments were performed at room temperature and reveal an apparent phase transition during mechanical loading, consistent with previous macroscopic electrical measurements. The transition lines between the relaxor states and the stress-induced ferroelectric state were determined at constant temperatures with stress-dependent dielectric constant measurements, providing a stress-temperature phase diagram.
Language eng
DOI 10.1103/PhysRevB.93.134111
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 0 Not Applicable
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2016, American Physical Society
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