Evidence for $M_B$ and $M_C$ phases in the morphotropic phase boundary region of $(1-x)[Pb(M{g}_{1/3}N{b}_{2/3})O_3]-xPbTi{O}_3$ : A Rietveld study

Abstract

We present here the results of the room temperature dielectric constant measurements and Rietveld analysis of the powder x-ray diffraction data on $(1-x)[Pb(M{g}_{1/3}N{b}_{2/3})O_3]-xPbTi{O}_3$(PMN-$x$PT) in the composition range $0.20\le x\le 0.45$ to show that the morphotropic phase boundary (MPB) region contains two monoclinic phases with space groups Cm (or $M_B$ type) and Pm (or $M_C$ type) stable in the composition ranges $0.27\le x\le 0.30$ and $0.31\le x\le 0.34$, respectively. The structure of PMN-$x$PT in the composition ranges $0\le x\le$ 0.26, and $0.35\le x\le 1$ is found to be rhombohedral (R3m) and tetragonal (P4mm), respectively. These results are compared with the predictions of Vanderbilt & Cohen's theory.

20 pages, 11 pdf figures

References in corpus (6)

• Phase diagram of the ferroelectric-relaxor (1-x)PbMg(1/3)Nb(2/3)O3-xPbTiO3
• Monoclinic phase in the relaxor-based piezo-/ ferroelectric Pb(Mg${}_{1/3}$Nb${}_{2/3})O_3$-PbTiO${}_3$ system
• Phase diagram of the relaxor ferroelectric (1-x)PbZn(1/3)Nb(2/3)O3-xPbTiO3
• Monoclinic structure of unpoled morphotropic high piezoelectric (PbMg1/3Nb2/3O3)0.65-(PbTiO3)0.35 and (PbZn1/3Nb2/3O3)0.91-(PbTiO3)0.09 compounds
• Phenomenological theory of phase transitions in highly piezoelectric perovskites
• Neutron Diffraction Study of the Irreversible R-MA-MC Phase Transition in Single Crystal Pb[(Zn1/3Nb2/3)1-xTix]O3

Cited by in corpus (16)

• X-ray and Neutron Diffraction Investigations of the Structural Phase Transformation Sequence under Electric Field in 0.7Pb(Mg1/3Nb2/3)-0.3PbTiO3 Crystals
• Domain structure in the monoclinic Pm phase of Pb(Mg1/3Nb2/3)O3 - PbTiO3 single crystals
• Origin of Large Dielectric Constant with Large Remnant Polarization and Evidence of Magnetoelectric Coupling in Multiferroic La modified BiFeO3-PbTiO3 Solid Solution
• Fragile phase stability in (1-x)Pb(Mg1/3Nb2/3O3)-xPbTiO3 crystals: A comparisons of [001] and [110] field-cooled phase diagrams
• First principles based atomistic modeling of phase stability in PMN-xPT
• Origin of high piezoelectric response of Pb(Zr_xTi_1-x)O_3 at the morphotropic phase boundary: Role of elastic instability
• Competing orders in PZN-xPT and PMN-xPT relaxor ferroelectrics
• Length-scale dependent average structures, piezoelectricity enhancement and depolarization mechanisms in a non-MPB high-performance piezoelectric alloy system PbTiO3-Bi(Zr1/2Ni1/2)O3
• Phase Coexistence and the Structure of the Morphotropic Phase Boundary Region in (1-x)Bi(Mg1/2Zr1/2)O3-xPbTiO3 Piezoceramics
• Evidence for a tricritical point coinciding with the triple point in (Pb0.94Sr0.06)(ZrxTi1-x)O3 : A combined synchrotron x-ray diffraction, dielectric and Landau theory study
• Presence of a monoclinic (Pm) phase in the morphotropic phase boundary region of multiferroic (1-x)Bi(Ni1/2Ti1/2)O3-xPbTiO3 solid solution: A Rietveld study
• Absence of Tetragonal Distortion in (1-x)SrTiO3-xBi(Zn1/2Ti1/2)O3 Solid Solution
• Investigation of New Lead- free (1-x)BaTiO3-xBi(Mg1/2Zr1/2)O3 Solid Solution with Morphotropic Phase Boundary
• Evidence for pressure induced polarization rotation, octahedral tilting and reentrant ferroelectric phase in tetragonal (Pb0.5Bi0.5)(Ti0.5Fe0.5)O3
• Microscopic piezoelectric behavior of clamped and membrane (001) PMN-30PT thin films
• Electrophysical properties of PMN-PT-PS-PFN:Li ceramics