Magnetic properties of Co-Fe nanowires electrodeposited in pores of alumina membrane

• Autorzy: Dobosz I. , Gumowska W. , Czapkiewicz M.

Warianty tytułu

PL

Własności magnetyczne nanodrutów Co-Fe otrzymanych w procesie elektroosadzania w porach membrany tlenku glinu

• Języki publikacji: EN

Abstrakty

EN

The nanowires of Co₆₆-Fe₃₄ alloy were obtained in the process of the electrodeposition in the pores of alumina membrane. With the use of the X-ray diffraction analysis the structure of cobalt-iron alloy wires was determined. The wires have the regular Body Centred Cubic structure (BCC). The influence of membrane parameters, an external magnetic field, and the annealing temperature on the magnetic properties of alloy wires was investigated. The obtained nanowires show a high shape anisotropy in the direction perpendicular to the membrane surface of anodic alumina. It was found that the highest influence on the magnetic properties of the wires has their geometry (height, diameter, and the distance between them). The use of an external magnetic field directed perpendicular to the sample surface during the electrodeposition process and additional thermal treatment (annealing) causes a slight increase of the coercive field, remanence, and volume energy density.

PL

Nanodruty stopu Co₆₆-Fe₃₄ uzyskano w procesie elektroosadzania w porach membrany tlenku glinu. Przy pomocy dyfrakcyjnej analizy rentgenowskiej określono strukturę drutów stopu kobalt -żelazo. Druty wykazują strukturę regularną przestrzennie centrowaną (RPC) (ang. BCC). Zbadano wpływ parametrów membrany, zewnętrznego pola magnetycznego oraz temperatury wyżarzania na własności magnetyczne drutów stopowych. Uzyskane nanodruty wykazują wysoką anizotropię kształtu w kierunku prostopadłym do powierzchni membrany anodowego tlenku glinu. Stwierdzono, że największy wpływ na własności magnetyczne ma geometria drutów (wysokość, średnica oraz odległości między nimi). Zastosowanie zewnetrznego pola magnetycznego w kierunku prostopadłym do powierzchni próbki podczas procesu elektroosadzania oraz dodatkowej obróbki termicznej (wyzarzania) powoduje niewielki wzrost pola koercji, remanencji oraz gęstości objętościowej energii.

Słowa kluczowe

EN

anodic alumina membrane; hysteresis loop; cobalt-iron alloy; nanowires

PL

membrana anodowego tlenku glinu; pętla histerezy; stop kobalt-żelazo; nanodruty

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2013
• Tom: Vol. 58, iss. 3
• Strony: 663--671
• Opis fizyczny: Bibliogr. 29 poz., rys., tab.

Twórcy

autor

Dobosz I.

• AGH, Univesity of Science and Technology, Faculty of Non–Ferrous Metals, Al. A. Mickiewicza 30, 30-059 Kraków, Poland

autor

Gumowska W.

• AGH, Univesity of Science and Technology, Faculty of Non–Ferrous Metals, Al. A. Mickiewicza 30, 30-059 Kraków, Poland

autor

Czapkiewicz M.

• AGH Univesity of Science and Technology, Faculty of Computer Science, Electronics and Telecomunications, Al. A. Mickiewicza 30, 30-059 Kraków, Poland

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