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pro vyhledávání: '"Perkovic, Olga"'
This is a review article of our work on hysteresis, avalanches, and criticality. We provide an extensive introduction to scaling and renormalization--group ideas, and discuss analytical and numerical results for size distributions, correlation functi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0406320
Publikováno v:
Computing in Science and Engineering 1, 73 (1999)
In studying the avalanches and noise in a model of hysteresis loops we have developed two relatively straightforward algorithms which have allowed us to study large systems efficiently. Our model is the random-field Ising model at zero temperature, w
Externí odkaz:
http://arxiv.org/abs/cond-mat/9809122
We present numerical simulations of avalanches and critical phenomena associated with hysteresis loops, modeled using the zero-temperature random-field Ising model. We study the transition between smooth hysteresis loops and loops with a sharp jump i
Externí odkaz:
http://arxiv.org/abs/cond-mat/9807336
Publikováno v:
Les Houches Workshop on ``Scale Invariance and Beyond", march 10-14, 1997, ed. B. Dubrulle, F. Graner, and D. Sornette, Springer, Berlin, p. 87.
Hysteresis, the lag between the force and the response, is often associated with noisy, jerky motion which have recently been called ``avalanches''. The interesting question is why the avalanches come in such a variety of sizes: naively one would exp
Externí odkaz:
http://arxiv.org/abs/cond-mat/9704059
Autor:
Perkovic, Olga, Sethna, James P.
The traditional magnetic storage mechanisms (both analog and digital) apply an external field signal H(t) to a hysteretic magnetic material, and read the remanent magnetization M(t), which is (roughly) proportional to H(t). We propose a new analog me
Externí odkaz:
http://arxiv.org/abs/cond-mat/9610036
Experimental systems with a first order phase transition will often exhibit hysteresis when out of equilibrium. If defects are present, the hysteresis loop can have different shapes: with small disorder the hysteresis loop has a macroscopic jump, whi
Externí odkaz:
http://arxiv.org/abs/cond-mat/9609072
Publikováno v:
Phys. Rev. Lett. 75, 4528 (1995).
We explain Barkhausen noise in magnetic systems in terms of avalanches near a plain old critical point in the hysteretic zero-temperature random-field Ising model. The avalanche size distribution has a universal scaling function, making non-trivial p
Externí odkaz:
http://arxiv.org/abs/cond-mat/9506111
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Publikováno v:
In Strategic Collaborations in Health Sciences Libraries 2019:65-77
Publikováno v:
In Journal of Magnetism and Magnetic Materials 2001 226 Part 2:1287-1292