A mechanism of magnetic hysteresis in heterogeneous Gd-Zr-Co-Cu-Fe alloys

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Resumo

The behavior of the (Gd, Zr)(CoCuFe)Z alloys samples in magnetic fields oriented at different angles to their easy magnetization axis has been studied. The angular dependences of magnetization and coercivity were constructed. The hysteresis loops of the two main structural components of the samples were constructed based on images of the domain structure in demagnetizing fields. An analysis of the obtained results was carried out under assumption of the mixed mechanism of hysteresis in these alloy family.

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Sobre autores

E. Semenova

Tver State University

Autor responsável pela correspondência
Email: Semenova_E_M@mail.ru
Rússia, Tver

M. Lyakhova

Tver State University

Email: Semenova_E_M@mail.ru
Rússia, Tver

P. Rakunov

Tver State University

Email: Semenova_E_M@mail.ru
Rússia, Tver

A. Karpenkov

Tver State University

Email: Semenova_E_M@mail.ru
Rússia, Tver

Yu. Konyukhov

National University of Science and Technology MISIS

Email: Semenova_E_M@mail.ru
Rússia, Moscow

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2. Fig. 1. Images of complete hysteresis loops (a) and demagnetizing parts of hysteresis loops (b) in reduced units for Gd0.85Zr0.15(Co0.70Cu0.09Fe0.21)Z samples.

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3. Fig. 2. Image of the microstructure (a, b) and domain structure (c, d) on the basal plane of Gd0.85Zr0.15(Co0.70Cu0.09Fe0.21)Z samples demagnetized by a reverse field with z = 6.0 (a, c) and 6.4 (b, d), presented on the same scale.

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4. Fig. 3. Images of hysteresis loops (a, b) and local coercivity intervals (c, d) of structural components A and B of Gd0.85Zr0.15(Co0.70Cu0.09Fe0.21)Z samples.

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5. Fig. 4. Angular dependences of the coercive force (a, b) and field dependences ∆σ (c, d) for Gd0.85Zr0.15(Co0.70Cu0.09Fe0.21)Z samples.

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