Mössbauer Study of Mechanosynthesized and Thermally Treated Co-Fe-Ni Alloys

• Authors: T. Pikula , D. Oleszak , M. Pękała , M. Mazurek , J. Żurawicz , E. Jartych
• Languages of publication: EN

Abstracts

EN

Mechanical alloying was used to prepare Co_{40}Fe_{60}, Co_{60}Fe_{35}Ni_{5}, Co_{40}Fe_{45}Ni_{15}, and Co_{40}Fe_{35}Ni_{25} alloys from the elemental powders. As X-ray diffraction studies proved the final products of milling were the solid solutions with bcc or fcc lattice and the average grain size between 20 and 50 nm. After heating of the alloys up to 993 K, the mixtures of two solid solutions with bcc and fcc lattices were formed in the case of Co-Fe-Ni alloys. Thermal treatment did not influence the type of the lattice of Co_{40}Fe_{60} alloy. The Mössbauer spectroscopy revealed hyperfine magnetic field distribution ranged from 33 to 38 T for Co_{40}Fe_{60} alloy and from 30 to 37 T for Co-Fe-Ni alloys. In the case of two-phase alloys, distributions were decomposed into two simple Gaussian functions using the numerical fitting. Magnetic measurements allowed to determine the effective magnetic moments and the Curie temperatures of the obtained alloys.

Keywords

EN

81.20.Ev; 75.50.Kj; 76.80.+y; 75.60.Ej

Discipline

• 76.80.+y: Mössbauer effect; other γ-ray spectroscopy(see also 33.45.+x Mössbauer spectra—in atomic and molecular physics; for biophysical applications, see 87.64.kx; for chemical analysis applications, see 82.80.Ej)
• 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.Kj: Amorphous and quasicrystalline magnetic materials

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 6
• Pages: 1545-1553

Dates

published

2008-12

Contributors

author

T. Pikula

• Department of Experimental Physics, Institute of Physics, Technical University of Lublin, Nadbystrzycka 38, 20-618 Lublin, Poland

author

D. Oleszak

• Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland

author

M. Pękała

• Department of Chemistry, University of Warsaw, al. Żwirki i Wigury 101, 02-089 Warsaw, Poland

author

M. Mazurek

• Department of Experimental Physics, Institute of Physics, Technical University of Lublin, Nadbystrzycka 38, 20-618 Lublin, Poland

author

J. Żurawicz

• Department of Experimental Physics, Institute of Physics, Technical University of Lublin, Nadbystrzycka 38, 20-618 Lublin, Poland

author

E. Jartych

• Department of Experimental Physics, Institute of Physics, Technical University of Lublin, Nadbystrzycka 38, 20-618 Lublin, Poland

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Identifiers

DOI

10.12693/APhysPolA.114.1545