{'fraction_non_alphanumeric': 0.01601164483260553, 'fraction_numerical': 0.013100436681222707, 'mean_word_length': 5.490566037735849, '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}}
Magnetic Fluctuations in Individual Superparamagnetic Particles

Fluctuations of the magnetic moment direction of single Fe3O4 nanoparticles were measured by conductive atomic force microscopy. Superparamagnetic nanoparticles were deposited on an Fe-Pt thin film, and the current through the film and individual particles was detected as a function of time. Due to magnetoresistance in the particle-film system, changes in the particle moment direction lead to different current levels. The effect of magnetic fields between -69 and 153 Oe on the characteristic current levels was used to determine the effective anisotropy of the particle. Magnetoresistance values of 45% were observed.