Structure and Magnetic Properties of Hot Pressed NiFe Powder

• Authors: D. Olekšáková , P. Kollář , J. Fűzer , M. Kusý
• Languages of publication: EN

Abstracts

EN

The aim of this work is to investigate the structure and magnetic properties of compacted microcrystalline NiFe (81 wt. % of Ni) powder. Bulk samples were prepared by compaction of milled NiFe (81 wt. % of Ni) ribbon. We found that after compaction of the powder displacement of domain walls becomes more dominant and the coercivity decreases and is comparable with the coercivity of conventional permalloy. The coercivity of the bulk material before heat treatment is lower than that for powder and that is why we can assume that the magnetic "contact" is restored after compaction. Annealing of bulk samples reduces the losses due to the relaxation of internal stresses induced by milling and compaction.

Keywords

EN

75.50.Bb; 81.20.Ev; 75.60.Ej

Discipline

• 81.20.Ev: Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation
• 75.60.Ej: Magnetization curves, hysteresis, Barkhausen and related effects(for hysteresis in ferroelectricity, see 77.80.Dj)
• 75.50.Bb: Fe and its alloys

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 75-78

Dates

published

2008-01

received

2007-07-09

Contributors

author

D. Olekšáková

• Department of Applied Mathematics, Faculty of Mechanical Engineering, Technical University in Košice, Letná 9, 042 00 Košice, Slovakia

author

P. Kollář

• Institute of Physics, Faculty of Sciences, P. J. šafárik University, Park Angelinum 9, 04154 Košice, Slovakia

author

J. Fűzer

• Institute of Physics, Faculty of Sciences, P. J. Šafárik University, Park Angelinum 9, 04154 Košice, Slovakia

author

M. Kusý

• Faculty of Material Science and Technology, Slovak University of Technology, Paulínska 16, 91724, Trnava, Slovakia

References

• 1. L. A. Dobrzański, Z. Brytan, M. A. Grande, M. Rosso, E. J. Pallavicini, J. Mater. Process Technol. 162-163, 20 (2005)
• 2. R. C. O'Handley, Modern Magnetic Materials, Wiley, New York 2000
• 3. O. Schneeweiss, B. David, T. Zak, R. Zboril, M. Mashlan, J. Magn. Magn. Mater. 310, e858 (2007)
• 4. P. Kollár, D. Olekšáková, J. Fűzer, J. Kováč, S. Roth, K. Polański, J. Magn. Magn. Mater. 310, 2609 (2007)
• 5. W. F. Randal, J. Inst. Elect. Eng. 80, 647 (1937)
• 6. H. Shokrollahi, K. Janghorban, J. Magn. Magn. Mater. 317, 61 (2007)

Identifiers

DOI

10.12693/APhysPolA.113.75