FIZIKA A 7 (1998) 2, 65-73

THE INFLUENCE OF DYNAMIC SURFACE FIELDS ON THE COERCIVE FIELD AND ENERGY LOSS OF AMORPHOUS Co_70.3Fe_4.7Si₁₅B₁₀ RIBBON

STJEPAN SABOLEK

Department of Physics, Faculty of Science, University of Zagreb, P. O. Box 162, HR-10001 Zagreb, Croatia

Received 16 December 1997; revised manuscript received 20 May 1998; Accepted 24 June 1998

The M-H loops obtained under different magnetization conditions have been used in order to analyze the coercive field H_c and the energy loss per cycle E for the amorphous Co_70.3Fe_4.7Si₁₅B₁₀ ribbon. Applying the model for the influence of the surface fields H_p on the magnetization processes in amorphous ferromagnetic ribbons, we investigated the effects of the dynamic field H_p on H_c and E. It is shown that the influence of dynamic H_p on the M-H loop does not depend on the origin of H_c and E (static or dynamic). This result is important both for the future investigations of the magnetization processes in these materials and for the potential applications.

PACS numbers: 75.50.Kj, 75.60.-d, 75.60.Ch

UDC 538.955, 539.213

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