Showing papers by "Jason R. Petta published in 1998"
TL;DR: In this article, the frequency-dependent third and fourth moments of the Barkhausen signal from a soft amorphous ferromagnet were measured and the data indicate strong coupling between the power in different frequency bands.
Abstract: Frequency-dependent third and fourth moments of the Barkhausen signal from a soft amorphous ferromagnet are measured. The data indicate strong coupling between the power in different frequency bands. The sign of the time asymmetry of a third-order voltage correlation indicates that the high-frequency Barkhausen events, on average, systematically precede the low-frequency Barkhausen events. The results are inconsistent with several commonly employed models.
21 citations
TL;DR: In this article, third and fourth order spectral measurements of Barkhausen noise in single crystal 3% Wt. Si-Fe and previously measured Fe/sub 21/Co/sub 64/B/sub 15/ samples showed striking differences.
Abstract: Third and fourth order spectral measurements of Barkhausen noise in single crystal 3% Wt. Si-Fe and previously measured Fe/sub 21/Co/sub 64/B/sub 15/ samples showed striking differences. F_e_Si spectral measurements were consistent with independent pulse models, unlike data from amorphous Fe/sub 21/Co/sub 64/B/sub 15/. Our measurements indicate that the variability of the high frequency exponent, which experimentally ranges between 1.5 and 2, is due to effects upon domain structure and other material properties.
6 citations