Autor: Olekšáková, D. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Soft Magnetic Properties in Bulk Permalloy Alloys Fabricated by a Warm Consolidation
Autorzy:: FŰzer, J.
Kollár, P.
Olekšáková, D.
Roth, S.
Powiązania:: https://bibliotekanauki.pl/articles/1813525.pdf
Data publikacji:: 2008-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.Bb
81.20.Ev
75.60.Ej
Opis:: Soft magnetic properties of bulk NiFe and NiFeMo alloys consolidated by hot compaction were studied. During annealing the compacts residual stresses diminish by relaxation and soft magnetic properties improve. The lowest coercivity of bulk NiFe and NiFeMo alloys are 11. 0 and 11. 2 A/m, respectively, while the total losses are 1. 81 and 1. 42 W/g at f=10 kHz and $B_\text{max}$ =0. 2 T.
Źródło:: Acta Physica Polonica A; 2008, 113, 1; 59-62
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Structure and Magnetic Properties of Hot Pressed NiFe Powder
Autorzy:: Olekšáková, D.
Kollář, P.
Fűzer, J.
Kusý, M.
Powiązania:: https://bibliotekanauki.pl/articles/1813529.pdf
Data publikacji:: 2008-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.Bb
81.20.Ev
75.60.Ej
Opis:: 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.
Źródło:: Acta Physica Polonica A; 2008, 113, 1; 75-78
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Influence of Milling and Compaction Processes οn Magnetic Properties of FeCo Powder
Autorzy:: Szumiata, T.
Gzik-Szumiata, M.
Brzózka, K.
Gawroński, M.
Górka, B.
Kollár, P.
Olekšáková, D.
Polański, K.
Szmaja, W.
Powiązania:: https://bibliotekanauki.pl/articles/1810615.pdf
Data publikacji:: 2009-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.80.+y
75.50.Bb
75.60.Ej
81.20.Ev
Opis:: Magnetic and structural studies were performed on $Fe_{50}Co_{50}$ material. The samples (disk-shaped, diameter: 10 mm, thickness: 2.5 mm) were fabricated by compaction of powder under pressure of 800 MPa for 5 min at temperatures 300-600°C. The powder was obtained by milling of $Fe_{50}Co_{50}$ alloy swarfs in high-energy planetary mill. The milling time varied from 1 h to 40 h. In the course of milling process the mean size of alloy pieces was decreasing from about 0.5 mm to 0.05 mm (scanning electron microscopy), which provided more compact structure after compression. The annealing process during compaction strongly reduces a coercive field of the samples. Parameters of conversion electron Mössbauer spectra are almost the same for all samples, which points to not significant changes of atomic and magnetic order after milling and compacting.
Źródło:: Acta Physica Polonica A; 2009, 115, 1; 403-405
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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