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Jo, Wook
Sustainable Functional Ceramics Lab
Research Interests
  • Lead-free piezoceramics, ultra - low temperature sintering, ferroelectrics, relaxor ferroelectrics, 2D materials, magnetoelectric materials, multiferroics

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Two-stage processes of electrically induced-ferroelectric to relaxor transition in 0.94(Bi1/2Na1/2)TiO3-0.06BaTiO(3)

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Title
Two-stage processes of electrically induced-ferroelectric to relaxor transition in 0.94(Bi1/2Na1/2)TiO3-0.06BaTiO(3)
Author
Jo, WookDaniels, JohnDamjanovic, DraganKleemann, WolfgangRoedel, Juergen
Keywords
Electrical property measurement; Ferroelectric domains; Ferroelectric order; Ferroelectric-to-relaxor; Second-order phase transition; Temperature dependent; Thermally induced depolarization; Two-stage process
Issue Date
2013-05
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.102, no.19, pp. -
Abstract
The stability of electrically induced long-range ferroelectric order in a relaxor 0.94(Bi1/2Na1/2) TiO3-0.06BaTiO(3) ceramic material has been investigated by temperature-dependent X-ray diffraction and electrical property measurements. The depolarization and ferroelectric-to-relaxor transition are identified as separate and discrete processes. It is observed that the induced ferroelectric domains first lose their ferroelectric/ferroelastic texture coincident with a peak signal in the thermally induced depolarization current. With further increase in temperature, the detextured ferroelectric domains are dissociated into nanoscale entities. This fragmentation marks the ferroelectric-to-relaxor transition. It is suggested that the ferroelectric-to-relaxor transition has features of a second order phase transition.
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DOI
10.1063/1.4805360
ISSN
0003-6951
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MSE_Journal Papers
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