Monoclinic phase in the relaxor-based piezoelectric/ferroelectricPb(Mg1/3N

Abstract

A ferroelectric monoclinic phase of space group Cm (M A type) has been discovered in 0.65Pb(Mg 1/3 Nb 2/3 )O 3 -0.35PbTiO 3 by means of high resolution synchrotron X-ray diffraction. It appears at room temperature in a single crystal previously poled under an electric field of 43 kV/cm applied along the pseudocubic

Dynamic origin of the morphotropic phase boundary: Soft modes and phase instability in0.68Pb(Mg1/3Nb2/3Cao1, Stock2, Xu3 et al. 2008Phys. Rev. B262150View full textAdd to dashboardCite

“…7-11͒ and PMN-xPT. [11][12][13][14][15][16] It has since been argued that monoclinic symmetry may be an important property underlying the exceptional piezoelectric response of PMN-xPT and PZN-xPT as it allows the polarization vector to rotate freely within a plane 17 rather than be restricted to a particular crystallographic axis as is the case for the higher symmetry R, T, and orthorhombic ͑O͒ phases.…”

Role of the TiO6 octahedra on the ferroelectric and piezoelectric behaviour of the poled PbMg1/3Nb2/3O3–xPbTiO3 (PMN–PT) single crystal and textured ceramic

“…Moreover, the sequence of structural phase transitions can be easily changed by the influence of the physical parameters such as pressure, electric field and the kind of polarization [18,20,21]. For example, it was demonstrated that the previously poled PMN-35%PT solid solutions adopt the monoclinic symmetry with the Cm space group at room temperature [22].…”

Three intrinsic relationships of lattice parameters between intermediate monoclinicMCand tetragonal phases in ferroelectricPb[(Wang1 2006Phys. Rev. B781200View full textAdd to dashboardCite

“…Recent extensive experimental investigations have discovered new intermediate phases and revealed fascinating while puzzling phase behaviors around the MPBs. [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] Since the recent discovery of an intermediate monoclinic M A phase in PZT near its MPB, [23][24][25][26][27][28] new intermediate phases have also been discovered in PZN-xPT and PMN-xPT near their respective MPBs, namely, monoclinic M A , [8][9][10] monoclinic M C , [8][9][10][11][12] orthorhombic ͑Refs. 8 and 13-15͒ phases in PZN-xPT, and orthorhombic, 16,17 monoclinic M C , 12,[18][19][20][21] monoclinic M A , 21,22 as well as a third monoclinic M B phase ͑Refs.…”