Autor: Ziółkowski, K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Magnetization Processes of Hard Magnetic Composites - Monte Carlo Studies aum
Autorzy:: Ziółkowski, G.
Granek, K.
Chrobak, A.
Powiązania:: https://bibliotekanauki.pl/articles/1030445.pdf
Data publikacji:: 2018-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.Ww
75.60.Ej
02.70.-c
Opis:: In the present work we performed some simulated annealing plus Monte Carlo studies concerning a hard magnetic spherical particles embedded into soft ferromagnetic matrix as well as irregular branches of soft and hard magnetic phases. Magnetization process of such system depends on exchange interactions of soft and hard magnetic object and interface between them. Especially interesting is the comparison of interactions in systems with different, regular and irregular geometry.
Źródło:: Acta Physica Polonica A; 2018, 133, 3; 663-665
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Size Effect of Hard Magnetic Properties of Fe-Nb-B-Tb Milled Alloys
Autorzy:: Granek, K.
Ziółkowski, G.
Chrobak, A.
Klimontko, J.
Talik, E.
Powiązania:: https://bibliotekanauki.pl/articles/1030390.pdf
Data publikacji:: 2018-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.07.Bc
75.50.Tt
75.60.d
76.80.+y
Opis:: The paper refers to magnetic and structural properties of powders made of Fe-Nb-B-Tb ultra-high coercive alloy. The initial alloy was milled in a low energy mill for 1 h and 14 h. With increasing milling time we observed gradual deterioration of hard magnetic properties i.e. the coercive field decreases from 5.51 T to 0.14 T for the bulk alloy and 14 h milled powder, respectively. However, for the 1 h milling time the micrometric powder reveals quite high coercivity of 2.77 T which is promising for possible applications in magnetic composites.
Źródło:: Acta Physica Polonica A; 2018, 133, 3; 645-647
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Ultra-Fast Current Aided Sintering of High Coercive Magnetic Powders and Composites
Autorzy:: Granek, K.
Ziółkowski, G.
Chrobak, A.
Klimontko, J.
Rak, J.
Zivotsky, O.
Gembalova, L.
Powiązania:: https://bibliotekanauki.pl/articles/351210.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: magnetic composites
ultra-fast current sintering
high coercive alloys
Opis:: The paper refers to pulverization and sintering of the (Fe₈₀ Nb₆ B₁₄ )_0.88 Tb_0.12 high coercive alloy. The powder was sintered using the ultra-fast current aided method. It turned out that too long discharge time leads to appearing of a soft magnetic phase and simultaneously, decrease in coercivity of the compacted powder. Nevertheless, it was possible to establish preference technology parameters, preserving magnetic hardness of the alloy. As a final test, an impact of Co-powder addition on magnetic properties was studied. The introduced soft magnetic phase (about 20 wt. %) caused about 30% increase of magnetic remanence, which is a resultof direct exchange interactions between the two phases.
Źródło:: Archives of Metallurgy and Materials; 2019, 64, 2; 791-796
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

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