Phys. Rev. B 72, 064114 (2005) [7 pages]Relaxor ferroelectric characteristics and temperature-dependent domain structure in a (110)-cut (PbMg1∕3Nb2∕3O3)0.75(PbTiO3)0.25 single crystalReceived 15 November 2004; published 23 August 2005 Relaxor ferroelectric characteristics of (110)-cut (PbMg1∕3Nb2∕3O3)0.75(PbTiO3)0.25 single crystal has been revealed by temperature-dependent hysteresis loops and dielectric permittivities measurements. Ferroelectric domain structure and evolution in the as-grown and the poled samples have also been studied by means of temperature-dependent piezoresponse force microscopy. The result from the as-grown single crystal reveals that the microdomain size distribution follows an exponential cutoff, and the crystal exhibits a transition from ferroelectric microdomain to paraelectric phase upon heating; while being cooled back to room temperature, new microdomains are rebuilt. By contrast, lamellar-shaped macrodomains have been observed in the poled sample and transitions from macro- to microdomain structures at 90 °C and from microdomain structure to paraelectric phase at 115 °C have been observed upon heating, respectively. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.72.064114
DOI:
10.1103/PhysRevB.72.064114
PACS:
77.84.−s, 68.37.Ps, 77.80.Dj, 77.65.−j
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