Quenching relaxor ferroelectric 0.94(Na1/2Bi1/2)TiO3–0.06BaTiO3 (NBT-6BT) enhances the depolarization temperature (Td), linked to stabilization of order. The thermal evolution domain structure and phase assemblage provides insights about onset order in quenched materials. Unpoled furnace cooled NBT-6BT ceramics were studied using situ temperature-dependent transmission electron microscopy. rhom...

Across the phase diagram of (Bi 1/2 Na )TiO 3 -xBaTiO solid solution, conduction mechanism changes from ionic to electronic through mixed case at morphotropic boundary, giving rise distinct DC degradation behaviors.

O3-type Na[Ni 1/3 Fe Mn ]O 2 is a promising positive electrode material for sodium-ion batteries. However, it suffers from structural degradation accompanied by surface-impurity growth during ambient storage and processing. In this study, we synthesized Na 1–2y Ca y [Ni with = 0 0.02, studied their stability towards exposure. 0.96 0.02 demonstrated excellent air retaining 0.93 of lattice in the...

Quenching has been established as a viable method to increase the depolarization temperature in (100-x) Na1/2Bi1/2TiO3–xBaTiO3 (NBT–xBT). The proposed hypothesis of stabilized ferroelectric order would entail changes polarized volume. To this end, air-quenched and furnace cooled samples four compositions NBT–xBT with x = 3, 6, 9, 12 mol. % BT were studied. Upon quenching, all demonstrate an rel...