Applied Physics Letters · 2010 · 32 citations · 10 references
Natural SciencesMaterials SciencePhysicsCrystal StructureMaterials PhysicsSolid-state ChemistryDielectric MaterialsDielectric PropertiesDielectricsFerroelectric MaterialsPhase TransitionsX-ray DiffractionDielectric PermittivityFerroelectric CrystalsFerroelectric PropertiesLead-free FerroelectricsPermittivityReciprocal SpaceReciprocal Space MappingSynchrotron X-ray Diffraction
Phase transformations of (001)-cut (Na1/2Bi1/2)TiO3 (NBT) and 1 at. % Mn-doped NBT (Mn-NBT) crystals have been investigated by means of dielectric permittivity, conventional x-ray diffraction (XRD), and high-resolution synchrotron XRD and reciprocal space mapping. An R−R+T−T−C transition sequence was observed in NBT and Mn-NBT upon zero-field heating. R, T, and C are rhombohedral, tetragonal, and cubic phases, respectively. R+T represents that the ferroelastic T phase coexists with the ferroelectric R phase. The Mn dopant can enhance dielectric response and reduce the dielectric loss in the high-temperature region due to the increased degree of ordering.
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Phase transitions and soft modes in sodium bismuth titanate
S. B. Vakhrushev, B. E. Kvyatkovsky, N. M. Okuneva et al. · Ferroelectrics · 1985 · 280 citations
X-ray study of phase transitions in efrroelectric Na0.5Bi0.5TiO3
Jānis Zvirgzds, P. P. Kapostin, J. V. Zvirgzde et al. · Ferroelectrics · 1982 · 270 citations