Inverted surface hysteresis loops in heterogeneous (nanocrystalline/amorphous) Fe81Nb7B12 alloys

Authors: Shalyguina, E.1; Škorvánek, I.; Švec, P.; Molokanov, V.; Mel'nikov, V.

Source: Technical Physics Letters, Volume 30, Number 7, July 2004 , pp. 591-594(4)

Publisher: MAIK Nauka/Interperiodica

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Abstract:

Inverted hysteresis loops were observed for the first time in the near-surface layers of heterogeneous (nanocrystalline/amorphous) Fe81Nb7B12 alloys. In particular, a negative residual magnetization is retained when a positive magnetic field applied in the sample plane is decreased to zero. The inverted hysteresis is qualitatively explained within the framework of a two-phase model, according to which the heterogeneous alloys contain two dissimilar phases exhibiting uniaxial magnetic anisotropy and featuring antiferromagnetic exchange interaction.

Document Type: Research article

DOI: 10.1134/1.1783412

Affiliations: 1: Email: shal@magn.ru

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