Journal article

Electric-field-temperature phase diagram of Mn-doped Bi-0.5(Na0.9K0.1)(0.5)TiO3 ceramics

Publication Details
Author(s): Ehara Y, Novak N, Yasui S, Itoh M, Webber K
Publisher: American Institute of Physics (AIP)
Publication year: 2015
Volume: 107
Journal issue: 26
ISSN: 0003-6951
Language: English


An electric field–temperature (E-T) phase diagram for a lead-free 0.5 mol. % Mn-doped Bi(Na0.1K0.9)TiO3 ceramics was investigated. The x-ray diffraction, dielectric and polarization measurements revealed relaxor behavior and were used to characterize the stability regions of the non-ergodic relaxor, ergodic relaxor and electric field induced ferroelectric states. As indicated by the polarization–current density profiles, transformation between two electric fields, induced ferro- electric states with opposite polarization direction arise via a two-step process through an interme- diate relaxor state. Interplay between the ferroelectric state conversion and intermediate relaxor state is governed by the dynamics of polarization relaxation. The presented E-T phase diagram revealed the effects of the applied electric field and temperature on stability regions. This is of spe- cial interest since the Bi0.5(Na0.1K0.9)0.5TiO3 ceramics were proposed as a potential piezoceramic material.

How to cite
APA: Ehara, Y., Novak, N., Yasui, S., Itoh, M., & Webber, K. (2015). Electric-field-temperature phase diagram of Mn-doped Bi-0.5(Na0.9K0.1)(0.5)TiO3 ceramics. Applied Physics Letters, 107(26).

MLA: Ehara, Yoshitaka, et al. "Electric-field-temperature phase diagram of Mn-doped Bi-0.5(Na0.9K0.1)(0.5)TiO3 ceramics." Applied Physics Letters 107.26 (2015).

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