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Filtering by: Creator Kumar, Nitish Creator Cann, David P.

Role of point defects in bipolar fatigue behavior of Bi(Mg[subscript 1/2]Ti[subscript 1/2])O₃ modified (Bi[subscript 1/2]K[subscript 1/2])TiO₃-(Bi[subscript 1/2]Na[subscript 1/2])TiO₃ relaxor ceramics

Creator:

Kumar, Nitish, Ansell, Troy Y., and Cann, David P.

Abstract:

Lead-free Bi(Mg₁/₂Ti₁/₂)O₃-(Bi₁/₂K₁/₂)TiO₃-(Bi₁/₂Na₁/₂)TiO₃ (BMT-BKT-BNT) ceramics have been shown to exhibit large electromechanical strains under high electric fields along with negligible fatigue under strong electric fields. To investigate the role of point defects on the fatigue characteristics, the composition 5BMT-40BKT-55BNT was doped to incorporate acceptor and donor defects on the A and...

Resource Type:

Article
Electromechanical strain and bipolar fatigue in Bi(Mg1/2Ti1/2)O3-(Bi1/2K1/2)TiO3-(Bi1/2Na1/2)TiO3 ceramics

Creator:

Kumar, Nitish and Cann, David P.

Abstract:

Lead-free ceramics of composition Bi(Mg₁/₂Ti₁/₂)O₃-(Bi₁/₂K₁/₂)TiO₃-(Bi₁/₂Na₁/₂)TiO₃ were prepared using solid state synthesis techniques. The dielectric spectra showed a Tmax of more than 320 °C for all compositions, and the transitions became increasingly diffuse as the Bi(Mg₁/₂Ti₁/₂)O₃ content increased. A lower temperature transition, indicating a transformation from an ergodic to a non-ergodic...

Resource Type:

Article