{'fraction_non_alphanumeric': 0.030918727915194347, 'fraction_numerical': 0.018551236749116608, 'mean_word_length': 4.901041666666667, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Effect of electric field on uniaxial relaxor ferroelectric strontium barium niobate

The effects of an electric field and the temperature dependence on the elastic properties of Sr0.61Ba0.39Nb2O6 were studied by micro-Brillouin scattering. In the ferroelectric phase, a dramatic increase in the longitudinal acoustic (LA) velocity, which is related to the elastic constant c33, was observed upon the application of a static electric field along the ferroelectric c-axis. A marked thermal hysteresis was observed below the Curie temperature, TC = 72 °C, between field heating (FH) and zero field (ZFC) cooling. The effect of an electric field on the static polar nanoregions (PNRs) was examined by the temporal application of a static electric field at 140 °C between TC and the intermediate temperature T* = 190 °C. After turning off the applied field at 140 °C, the LA velocity during ZFC was measured, and it is found that, below TC, the temperature dependence is similar to that during FH. This fact indicates that the alignment of local polarization in static PNRs between TC and T* is possible using an external electric field.