X-ray diffraction and phenomenological studies of the engineered monoclinic crystal domains in single crystal relaxor ferroelectrics

Abstract

Articles you may be interested inA monoclinic-tetragonal ferroelectric phase transition in lead-free (K0.5Na0.5)NbO3-x%LiNbO3 solid solution

Polarization Rotation via a Monoclinic Phase in the Piezoelectric 92%PbZn1/3Nb2/3ONoheda1, Cox2, Shirane3 et al. 2001Phys. Rev. Lett.Self Cite680314081View full textAdd to dashboardCite

“…The low-energy experiments at 18 keV essentially reproduce the results obtained by Durbin et al [11,12]. The c m lattice parameter along the field direction ͓001͔ exhibits the same strongly nonlinear field dependence illustrated in Fig.…”

“…2. Measurements made with the scattering vector perpendicular to the field direction after the field was removed show the same characteristic diffraction features as recently reported [12], namely, a very broad peak on the low-angle side and a very sharp peak on the high-angle side, corresponding to H 2.000 and K 2.015, respectively. The broad peak changes with field while the sharp peak is field independent, in agreement with our highenergy x-ray results described above.…”

“…The jump observed at the threshold field was attributed to a structural phase transition between the rhombohedral and the tetragonal phases. Very recently, it was also reported that the high-field tetragonal phase changes, after removal of the field, into a mixture of a dominant monoclinic phase with a remnant tetragonal phase [12].…”

“…[11,12]. The crystals were oriented using a Laue backreflection camera as described previously [8], and cut into 2 3 2 3 2 mm 3 cubes with their faces perpendicular to the ͗100͘ directions.…”

Evidence forMBandMCphases in the morphotropic phase boundary region ofSingh1, Pandey2 2003Phys. Rev. B

“…These recent developments in PZT have been followed up by similar stud-ies on the structure of MPB phases in the PMN-xPT [16,17,18,19,20] and PZN-xPT [21,22] systems. In these systems also, the structure of the morphotropic phase in the unpoled state is monoclinic but with a space group Pm [16,17], which is different from that in the PZT system.…”