caa a22 4500 388022698 CHVBK 20180307124928.0 cr unu---uuuuu 161130e199805 xx s 000 0 eng 10.1557/JMR.1998.0190 doi S0884291400044265 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0190 Ferroelectric properties of tetragonal lead barium niobate (Pb1−xBaxNb2O6) crystals near the morphotropic phase boundary [Elektronische Daten] Tungsten bronze ferroelectrics with a morphotropic phase boundary (MPB) have become increasingly important for a variety of applications because of their enhanced and unique properties near the MPB. Lead barium niobate (Pb1−xBaxNb2O6) crystals, which have a morphotropic phase boundary between the orthorhombic (1 − x > ∼0.63) and tetragonal (1 − x, <, 0.63) phases, were grown in sealed Pt crucibles by the vertical Bridgman method for tetragonal compositions near the MPB, and their ferroelectric properties were investigated. The ferroelectric domain structures in as-grown crystals were revealed either by etching in hydrofluoric acid or by polishing with colloidal silica, the latter providing clearer features. Domain size on the surface perpendicular to the polar axis was 10-50 μm. Crystals could be poled by slowly cooling from above the Curie temperatures (300-400 °C) under a dc field of 5 V/mm. The spontaneous polarization Ps of tetragonal Pb1−xBaxNb2O6 was found to be in the range of 0.40-0.70 μC/mm2 at room temperature depending on composition and increased as the composition approached morphotropic phase boundary (1 − x = ∼0.63), as expected. Copyright © Materials Research Society 1998 Lee Myeongkyu Department of Materials Science & Engineering, Stanford University, Stanford, California 94305 Feigelson Robert S. Department of Materials Science & Engineering, Stanford University, Stanford, California 94305 Journal of Materials Research Cambridge University Press 13/5(1998-05), 1345-1350 0884-2914 13:5<1345 1998 13 JMR https://doi.org/10.1557/JMR.1998.0190 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0190 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lee Myeongkyu Department of Materials Science & Engineering, Stanford University, Stanford, California 94305 NATIONALLICENCE 700 1- Feigelson Robert S. Department of Materials Science & Engineering, Stanford University, Stanford, California 94305 NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/5(1998-05), 1345-1350 0884-2914 13:5<1345 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge