In situ characterization of polycrystalline ferroelectrics using x-ray and neutron diffraction – ERRATUM

doi: 10.1557/jmr.2014.302, Published by Materials Research Society with Cambridge University Press, 28 October 2014.

In Esteves et al.¹, on page 12,

In PMN-PT, the diffraction pattern appears cubic, i.e., there is no splitting of Bragg peaks that indicate symmetry lowering with temperature change. However, the use of PDFs has enabled the characterization of polar nanoregions (PNRs) that exist within a pseudocubic matrix.102 Within the PNRs, the displacement of cations parallel to [111] indicates local rhombohedral distortions, though the average symmetry measured at a longer length scale remains cubic. A similar phenomenon was observed in PMN-PT where the PNRs are larger (∼150 Å at 300 K) than PMN-PT (∼20 Å at 300 K) and are visible in powder diffraction by splitting of Bragg peaks thus resulting a rhombohedral structure below 325 K.

should read:

In PMN, the diffraction pattern appears cubic, i.e., there is no splitting of Bragg peaks that indicate symmetry lowering with temperature change. However, the use of PDFs has enabled the characterization of polar nanoregions (PNRs) that exist within a pseudocubic matrix.¹⁰² Within the PNRs, the displacement of cations parallel to [111] indicates local rhombohedral distortions, though the average symmetry measured at a longer length scale remains cubic. A similar phenomenon was observed in PZN where the PNRs are larger (∼150 Å at 300 K) than PMN (∼20 Å at 300 K) and are visible in powder diffraction by splitting of Bragg peaks thus resulting a rhombohedral structure below 325 K.¹⁰⁰

The publisher regrets the mistake.