Stability of phases in modified lead zirconate with variation in pressure, electric field, temperature and composition

Electric-field-induced antiferroelectric to ferroelectric phase transition in mechanically confinedPb0.99Nb0.02[(Tan1, Frederick2, Ma3 et al. 2010Phys. Rev. B732540View full textAdd to dashboardCite

“…[1][2][3][4][5][6] Such a phase transition can even be realized with the intrinsic interfacial field in very thin antiferroelectric films. 7 On the other hand, certain ferrroelectric ceramics can be depolarized and transformed into an antiferroelectric phase by hydrostatic pressures or uniaxial compressive stresses.…”

“…7 On the other hand, certain ferrroelectric ceramics can be depolarized and transformed into an antiferroelectric phase by hydrostatic pressures or uniaxial compressive stresses. 1,[8][9][10][11] These phase switchings involve the development/release of a large electrical polarization and are generally accompanied by a significant volume expansion/contraction, making them the physics basis for many engineering applications. The coupled changes in polarization and volume at the phase transition render these materials responsive to multiple stimuli.…”

Antiferroelectricity induced by electric field in NaNbO3-based lead-free ceramics

“…Antiferroelectricity induced by electric field in NaNbO 3 -based lead-free ceramics Yonghao Xu, 1,2 Wei Hong, 1 Yujun Feng, 2 and Xiaoli Tan 1,a) Electric fields are known to favor a ferroelectric phase with parallel electric dipoles over an antiferroelectric phase. We demonstrate in this Letter that electric fields can induce an antiferroelectric phase out of a ferroelectric phase in a NaNbO 3 -based lead-free polycrystalline ceramic.…”

Auxetic behavior under electrical loads in an induced ferroelectric phase

“…6,7 When subjected to strong external electric fields, they can undergo a phase transition into a ferroelectric phase where a parallel orientation of the dipoles is stable. [6][7][8][9][10][11][12][13] This electric-field-induced phase transition manifests itself in the development of a large polarization and is generally accompanied by a significant volume expansion. Such an expansion is supported by the two sublattice models 14 when an electrostrictive coupling term is introduced.…”

“…[7][8][9][10][11][12][13] In fields above 40 kV/cm, as indicated in Fig. 1͑b͒, the ceramic is in a pure ferroelectric phase.…”