Autor: Górka, T. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Phase Composition and Magnetic Properties of Nanoperm Thin Films Doped with Yttrium
Autorzy:: Brzózka, K.
Sovák, P.
Szumiata, T.
Górka, B.
Gawroński, M.
Powiązania:: https://bibliotekanauki.pl/articles/1428972.pdf
Data publikacji:: 2012-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.Bb
75.70.-i
76.80.+y
78.20.Ls
Opis:: Thin films of Nanoperm alloys with partial substitution of iron by yttrium are the subject of investigations. The attention is fixed on the influence of yttrium substitution on structure and magnetic characteristics of the samples. The effect of film thickness is also considered. Conversion electron Mössbauer spectroscopy and magneto-optic Kerr effect were used to derive hyperfine parameters and coercive field, respectively. Coexistence of crystalline bcc-Fe phase and an amorphous one with diverse proportion was stated in most of the samples. It was found that surface and interface regions contribute to the magnetic properties of films.
Źródło:: Acta Physica Polonica A; 2012, 121, 5-6; 1270-1272
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Mössbauer Study of Magnetic Texture of Finemet-Type Ribbons
Autorzy:: Brzózka, K.
Sovák, P.
Górka, B.
Szumiata, T.
Gawroński, M.
Powiązania:: https://bibliotekanauki.pl/articles/1506573.pdf
Data publikacji:: 2011-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.80.+y
75.50.Kj
81.40.Ef
Opis:: Magnetic texture of amorphous Finemet-type alloys substituted by Co, Ni, Mn, Ge and V was investigated by means of Mössbauer spectroscopy using various angular configurations. Samples in form of ribbons were manufactured by single-roller melt spinning technique. In most of investigated alloys some preference of alignment of atomic magnetic moments in-plane of sample is stated, except of some alloys substituted by germanium in which slight tendency to out-of plane spin orientation is proved.
Źródło:: Acta Physica Polonica A; 2011, 119, 1; 33-36
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: The influence of Co and V substitution on structural properties of FINEMET-type alloys
Autorzy:: Szumiata, T.
Gawroński, M.
Brzózka, K.
Górka, B.
Sovák, P.
Pavlík, P.
Powiązania:: https://bibliotekanauki.pl/articles/148217.pdf
Data publikacji:: 2007
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: magnetic texture
CEMS
polarized radiation
Opis:: The effect of addition of Co and V on the hyperfine parameters of amorphous as well as nanocrystalline Finemet-type alloys has been studied by means of transmission Mössbauer spectrometry. It was stated that these elements infiltrate into crystalline grains in the course of crystallization, what causes alteration in structure. Different evolution of magnetic hyperfine field is reported in both cases and analyzed. In the series of alloys substituted by vanadium, the substantial paramagnetic component attributed to iron-poor regions in the amorphous remainder was found.
Źródło:: Nukleonika; 2007, 52, supl. 1; 21-28
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Finemet Thin Films Substituted by Chromium - CEMS and MOKE Study
Autorzy:: Brzózka, K.
Szumiata, T.
Sovák, P.
Górka, B.
Hibner, K.
Balcerski, J.
Powiązania:: https://bibliotekanauki.pl/articles/1533968.pdf
Data publikacji:: 2010-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.Bb
61.46.Hk
76.80.+y
78.20.Ls
Opis:: Conversion electron Mössbauer spectroscopy and magneto-optical Kerr effect were applied to investigate hyperfine interactions and macroscopic magnetic properties of Finemet-type thin films. Phase analysis as well as compositional evolution of hyperfine parameters and coercivity was performed in the range of chromium percentage 0 ≤ x ≤ 14. Essential differences in structure and hyperfine parameters were found for films of different chromium concentration. Coercivity shows non-monotonic dependence with minimal value at x = 5.
Źródło:: Acta Physica Polonica A; 2010, 118, 5; 794-796
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: The influence of Al doping on microstructure and hyperfine interactions in FINEMET
Autorzy:: Brzózka, K.
Szumiata, T.
Gawroński, M.
Górka, B.
Zorkovská, A.
Sovák, P.
Powiązania:: https://bibliotekanauki.pl/articles/147216.pdf
Data publikacji:: 2004
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: Mössbauer spectroscopy
FINEMET
nanocrystalline alloys
Al-dopped FINEMET
Opis:: Structure and hyperfine interactions of amorphous and nanocrystalline FINEMET were investigated by means of Mössbauer spectrometry. It was found that substitution of x iron atoms with aluminum ones causes changes in the properties of both amorphous and nanocrystalline alloys as well as in the structure of individual phases. The reduction of hyperfine magnetic field caused by atom substitution is a non-linear function of x, unlike the linear dependence expected because of dilution. Temperature studies reveal a double magnetic phase transition at 250°C and 330°C as well as point to the variety of phases in the examined material.
Źródło:: Nukleonika; 2004, 49,suppl.3; 59-62
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 6.

Tytuł:: Local Structure and Magnetic Characteristics of FINEMET Alloys Substituted by Vanadium
Autorzy:: Brzózka, K.
Szumiata, T.
Gawroński, M.
Górka, B.
Sovák, P.
Pavlík, G.
Kolesár, V.
Powiązania:: https://bibliotekanauki.pl/articles/1813522.pdf
Data publikacji:: 2008-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.-y
76.80.+y
Opis:: 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.
Źródło:: Acta Physica Polonica A; 2008, 113, 1; 51-54
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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