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Influence of Annealing Treatment on the Structure and Magnetic Properties of Fe-Al-Cu-Nb-Si-B Alloys

100%

Pavlík G., Matta P., Sovák P., Zorkovská A., Konč M.

Acta Physica Polonica A

2000

vol. 97

issue 5

741-744

In this paper we present experimental results on influence of Al content on the structure and saturation magnetostriction of Fe-Al-Cu-Nb-Si-B alloys after heat treatment. Transmission electron microscopy observations confirmed the existence of nanocrystalline structure after annealing at 490°C and 550°C for all samples. The crystallization temperature of FeSi phase and the temperature at which the polycrystalline transformation starts were determined from temperature dependence of electrical resistivity. Aluminium slightly decreases the first crystallization temperature and considerably decreases the saturation magnetostriction in as-quenched state.

Local Structure and Magnetic Characteristics of FINEMET Alloys Substituted by Vanadium

86%

Brzózka K., Szumiata T., Gawroński M., Górka B., Sovák P., Pavlík G., Kolesár V.

Acta Physica Polonica A

2008

vol. 113

issue 1

51-54

Amorphous and nanocrystalline FINEMET-type alloys with vanadium addition up to 7 at% were investigated by the MÖssbauer spectroscopy and magnetic methods. The outcomes evidence alterations in grain structure, although the main effect is related to the changes in intergranular phase. This induces diminution of mean hyperfine field, saturation induction and Curie temperature as well as the increase in coercivity.

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2 Acta Physica Polonica A

1 2008

1 2000

2 Pavlík G.

2 Sovák P.

1 Brzózka K.

1 Gawroński M.

1 Górka B.

1 Kolesár V.

1 Konč M.

1 Matta P.

1 Szumiata T.

1 Zorkovská A.

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Influence of Annealing Treatment on the Structure and Magnetic Properties of Fe-Al-Cu-Nb-Si-B Alloys

Local Structure and Magnetic Characteristics of FINEMET Alloys Substituted by Vanadium