Internal Friction Originating from Random Magnetism

We investigated the relation between internal friction and magnetism due to a random arrangement of magnetic atoms by using the Mn–Cu–Ni–Fe alloy, called M2052. Its internal friction and dc susceptibility were measured as a function of the temperature from 4.2 K to room temperature. As for the inter...

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Veröffentlicht in:Japanese Journal of Applied Physics 2004-06, Vol.43 (6R), p.3552
Hauptverfasser: Tanji, Toru, Moriwaki, Shigenori, Mio, Norikatsu, Tomaru, Takayuki, Suzuki, Toshikazu, Shintomi, Takakazu
Format: Artikel
Sprache:eng
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Zusammenfassung:We investigated the relation between internal friction and magnetism due to a random arrangement of magnetic atoms by using the Mn–Cu–Ni–Fe alloy, called M2052. Its internal friction and dc susceptibility were measured as a function of the temperature from 4.2 K to room temperature. As for the internal friction, two peaks were observed at around 70 K and 270 K; the peak at the lower temperature was shifted by changing the measurement frequency. A comparison of the temperature dependency of the susceptibility and the internal friction indicated that freezing of the magnetic moments of ferromagetic clusters could cause low-temperature internal friction. We confirmed that relaxation related to the internal friction is consistent with magnetic relaxation in random magnetism.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.43.3552