Influence of Thermal Treatment on Frequency Dependence of the Switching Field in Amorphous and Nanocrystalline FeNiMoB Microwires

• Authors: E. Komova , R. Varga , M. Vazquez
• Languages of publication: EN

Abstracts

EN

Amorphous and nanocrystalline ferromagnetic glass-coated microwires show excellent magnetic properties that make them very suitable to be employed as sensing elements in devices for technical applications. New Fe_{40}Ni_{38}Mo_4B_{18} alloy composition can be appropriate to prepare soft magnetic nanocrystalline microwires which exhibit magnetic bistability even in the nanocrystalline state. Stability of magnetic properties after different thermal treatments (T_{a} = 250-425°C) and after nanocrystallization was confirmed by the switching field H_{sw} measurements. The frequency dependence of the switching field was investigated. Two contributions to the domain wall switching mechanism were recognized: magnetoelastic one coming from the magnetoelastic interaction of the magnetic moments with the stresses and relaxation one coming from the structural relaxation of local defects at atomic scale. But, the relative role of both contributions has been shown to vary strongly in different stage of devitrification.

Keywords

EN

75.50.Kj; 75.60.Ej; 75.50.Tt

Discipline

• 75.50.Tt: Fine-particle systems; nanocrystalline materials
• 75.60.Ej: Magnetization curves, hysteresis, Barkhausen and related effects(for hysteresis in ferroelectricity, see 77.80.Dj)
• 75.50.Kj: Amorphous and quasicrystalline magnetic materials

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 118
• Issue: 5
• Pages: 768-769

Dates

published

2010-11

Contributors

author

E. Komova

• Faculty of Aeuronautics, Technical University of Košice, Rampová 7, 041 21 Košice, Slovakia

author

R. Varga

• Institute of Physics, Faculty of Science, UPJŠ, Park Angelinum 9, 041 54 Košice, Slovakia

author

M. Vazquez

• Instituto de Ciencia de Materiales de Madrid, CSIC, 28049 Madrid, Spain

References

• 1. A. Zhukov, J. González, M. Vázquez, V. Larin, A. Torcunov, in: Encyclopedia of Nanoscience and Nanotechnology, Ed. H.S. Nalwa, American Scientific, New York 2004, Ch. 62, p. 365
• 2. H. Chirac, M. Tibu, Tibor-Adrian Óvari, IEEE Trans. Magn. 45, 4286 (2009)
• 4. E. Komova, M. Varga, R. Varga, P. Vojtanik, J. Bednarcik, J. Kovac, M. Provencio, M. Vazquez, Appl. Phys. Lett. 93, 062502 (2008)
• 5. R.V. Ramanujan, S.W. Du, J. Alloys Comp. 425, 251 (2006)
• 6. R. Varga, K.L. Garcia, A. Zhukov, M. Vazquez, P. Vojtanik, Appl. Phys. Lett. 83, 2620 (2003)
• 7. A. Zhukov, M. Vázquez, J. Velázquez, C. Garcia, R. Valenzuela, B. Ponomarev, Mater. Sci. Eng. A 226-228, 753 (1997)
• 8. E. Komova, M. Varga, R. Varga, P. Vojtaník, J. Torrejon, M. Provencio, M. Vazquez, J. Phys., Condens. Matter 19, 236229 (2007)
• 9. L. Madej, G. Haneczok, A. Chrobak, P. Kwapulinski, Z. Stoklosa, J. Rasek, J. Magn. Magn. Mater. 320, e774 (2008)

Identifiers

DOI

10.12693/APhysPolA.118.768