Details

Autor(en) / Beteiligte

• Volegov, A.S.
• Müller, K.-H.
• Bittner, F.
• Mix, T.
• Neznakhin, D.S.
• Volegova, E.A.
• Nenkov, K.
• Schultz, L.
• Woodcock, T.G.

Titel

Magnetic viscosity of L10 structured Mn-Ga and Mn-Al alloys

Ist Teil von

• Journal of magnetism and magnetic materials, 2017-11, Vol.441, p.750-756

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •The viscosity, S, of L10-MnGa based material was measured for the first time.•Dependencies of fluctuation field vs. applied field were established.•A model proposed for recording media was shown to be inapplicable to hard magnetic materials. The magnetic viscosity, S, of Mn-Ga and Mn-Al alloys with the L10 type crystal structure has been measured at temperatures in the range 2–300K. The values of the fluctuation field, Sv, and the coercive field, Hc, of the two types of materials are comparable to each other. The observed dependence of Sv on the applied field, H, is not in accordance with the theory of magnetic viscosity of particulate recording media. The relationship between Hc and Sv, the latter measured at H=−Hc, fits the Barbier relationship, Sv∼Hcα, rather well.