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Sci. Lett. J. 2015, 4: 83
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Research Article
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Full Text
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Frequency-adapted crossover from para-to-dia magnetization in an Ising-like dipole-dipole model
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Nilangshu K. Dasa,c, P. Barata, Sounak Deyb, T. Jayakumarc
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a Variable Energy Cyclotron Centre, Kolkata-700064, India
b Indian Statistical Institute, Kolkata-700108, India
c Indira Gandhi Centre for Atomic Research, Kalpakkam-603102, India
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Abstract |
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The aggregation of interacting nano-magnetic dipoles, demostrate both experimentally and theoretically as a model system to detect intriguing co-operative physical phenomena. Here we show a crossover from paramagnetic to diamagnetic state by changing the frequency of the applied sinusoidal magnetic field for an ensemble of nano-magnets. This phenomenon unravels an insight of physics and it may be significant on the design and development of magnetic devices.
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Keywords
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Nano-magnetism; Cooperative phenomena; Magnetic memories; Magnetic anisotropy
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