On the power spectrum of magnetization noise

Details On the power spectrum of magnetization noise On the power spectrum of magnetization noise

2001-06-06

arxiv.org/abs/cond-mat/0106113v1

J. Magn. Magn. Mat. 242-245P2,1085 (2002)

Physics

Condensed Matter

Materials Science

8 pages, 3 .eps figures (elsart.cls style required)

Scientific paper

10.1016/S0304-8853(01)01077-0

Understanding the power spectrum of the magnetization noise is a long standing problem. While earlier work considered superposition of 'elementary' jumps, without reference to the underlying physics, recent approaches relate the properties of the noise with the critical dynamics of domain walls. In particular, a new derivation of the power spectrum exponent has been proposed for the random-field Ising model. We apply this approach to experimental data, showing its validity and limitations.

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