{'fraction_non_alphanumeric': 0.032917139614074914, 'fraction_numerical': 0.0170261066969353, 'mean_word_length': 5.732824427480916, '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}}
Ferroelectric and piezoelectric properties of cold pressed polyvinyledene fluoride/barium titanate nano-composites

Abstract The ferroelectric and piezoelectric behaviour of a composite polymer ferroelectric (PF) based on ferroelectric polymer [polyvinyledene fluoride (PVDF)] and nano barium titanate (n-BaTiO3) with different volume fractions of n-BaTiO3 (f BaTiO3), prepared through the novel cold pressing method, is investigated. The ferroelectric parameters increase up to f BaTiO3 = 0.30, attributed to spherulites of PVDF, the increase of n-BaTiO3 and the ordered structure due to cold pressing. The clustering of n-BaTiO3 is responsible for randomisation of the structures of PF above 0.30, leading to a decrease in electrical polarisations, while dielectric properties increase linearly due to the increase of interfaces and piezoelectricity remains constant beyond 0.20.