Effects of Co, Ni, and Cr addition on microstructure and magnetic properties of amorphous and nanocrystalline Fe86−xMxZr7Nb2Cu1B4 (M = Co, Ni, CoCr, and Cr, x = 0 or 6) alloys

• Authors: Agnieszka Łukiewska , Jan Świerczek , Mariusz Hasiak , Jacek Olszewski , Józef Zbroszczyk , Piotr Gębara , Wanda Ciurzyńska
• Languages of publication: EN

Abstracts

EN

Mössbauer spectra and thermomagnetic curves for the Fe86−xMxZr7Nb2Cu1B4 (M = Co, Ni, CoCr, and Cr, x = 0 or 6) alloys in the as-quenched state and after the accumulative annealing in the temperature range 600–800 K for 10 min are investigated. The parent Fe86Zr7Nb2Cu1B4 amorphous alloy is paramagnetic at room temperature, and substitution of 6 at.% of Fe by Co, Ni, and CoCr changes the magnetic structure – the alloys become ferromagnetic, whereas replacing 6 at.% of Fe with Cr preserves the paramagnetic state. After the heat treatment at 600 K, the decrease of the average hyperfine field induction, as compared to the as-quenched state, is observed due to the invar effect. After this annealing, the Curie temperature for all investigated alloys decreases. The accumulative annealing up to 800 K leads to the partial crystallization; α-Fe or α-FeCo grains with diameters in the range of 12–30 nm in the residual amorphous matrix appear.

Keywords

EN

amorphous materials; nanocrystalline materials; Mössbauer spectroscopy; invar effect; Curie temperature

• Publisher: De Gruyter Open
• Journal: Nukleonika
• Year: 2015
• Volume: 60
• Issue: 1
• Pages: 103-108

Dates

published

1 - 3 - 2015

online

12 - 3 - 2015

received

18 - 6 - 2014

accepted

7 - 11 - 2014

Contributors

author

Agnieszka Łukiewska

• Institute of Physics, Czestochowa University of Technology, 19 Armii Krajowej Ave., 42-200 Częstochowa, Poland, Tel.: [phone], Fax: [phone]

author

Jan Świerczek

• Institute of Physics, Czestochowa University of Technology, 19 Armii Krajowej Ave., 42-200 Częstochowa, Poland, Tel.: [phone], Fax: [phone]

author

Mariusz Hasiak

• Institute of Materials Science & Applied Mechanics, Wrocław University of Technology, 25 Smoluchowskiego Str., 50-370 Wrocław, Poland

author

Jacek Olszewski

• Institute of Physics, Czestochowa University of Technology, 19 Armii Krajowej Ave., 42-200 Częstochowa, Poland, Tel.: [phone], Fax: [phone]

author

Józef Zbroszczyk

• Institute of Physics, Czestochowa University of Technology, 19 Armii Krajowej Ave., 42-200 Częstochowa, Poland, Tel.: [phone], Fax: [phone]

author

Piotr Gębara

• Institute of Physics, Czestochowa University of Technology, 19 Armii Krajowej Ave., 42-200 Częstochowa, Poland, Tel.: [phone], Fax: [phone]

author

Wanda Ciurzyńska

• Institute of Physics, Czestochowa University of Technology, 19 Armii Krajowej Ave., 42-200 Częstochowa, Poland, Tel.: [phone], Fax: [phone]

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Identifiers

DOI

10.1515/nuka-2015-0021