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Author

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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Electric-field-temperature phase diagram of the ferroelectric relaxor system (1-x)Bi1/2Na1/2TiO3-xBaTiO3 doped with manganese

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Title
Electric-field-temperature phase diagram of the ferroelectric relaxor system (1-x)Bi1/2Na1/2TiO3-xBaTiO3 doped with manganese
Author
Sapper, EvaNovak, NikolaJo, WookGranzow, TorstenRodel, Jurgen
Keywords
Ferroelectricity; Manganese; Phase diagrams; Sodium
Issue Date
201405
Publisher
AMER INST PHYSICS
Citation
JOURNAL OF APPLIED PHYSICS, v.115, no.19, pp.194104 -
Abstract
The electric-field-temperature phase diagram for the lead-free relaxor material (1 - x)(Bi1/2Na1/2)TiO3 - xBaTiO 3 (x = 0.03, 0.06, and 0.09) doped with 0.5 mol% Mn (BNT-100xBT:Mn) was established. Transition lines between ergodic or nonergodic relaxor states and the field-induced ferroelectric state were determined at constant temperatures with electric-field-dependent measurements of the polarization as well as of the piezoelectric coefficient and permittivity. Near the depolarization temperature Td, the switching between two ferroelectric poling directions occurs in two steps via an intermediate relaxor state. This effect is closely related to the pinching of the ferroelectric hysteresis loop.
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DOI
http://dx.doi.org/10.1063/1.4876746
ISSN
0021-8979
Appears in Collections:
MSE_Journal Papers
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