Autor: Lančok, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Magnetic Behaviour of Ferritin Nanoparticles
Autorzy:: Miglierini, M.
Lancok, A.
Powiązania:: https://bibliotekanauki.pl/articles/1534808.pdf
Data publikacji:: 2010-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.80.+y
31.30.Gs
75.75.-c
Opis:: Characterization of magnetic behaviour of ferritin nanoparticles of biological origin is presented. Two types of samples prepared from human and horse spleen tissues were investigated by $\text{}^{57}Fe$ Mössbauer spectrometry. At room temperature, ferritin nanoparticles exhibit superparamagnetic behaviour due to their small dimensions. First occurrence of magnetic interactions was noticed below 60 K. Blocking temperature of human and horse ferritin nanoparticles was determined to be of 16 K and 32 K, respectively.
Źródło:: Acta Physica Polonica A; 2010, 118, 5; 944-945
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Magnetic Hyperfine Fields of Nanoperm Alloys
Autorzy:: Miglierini, M.
Kohout, J.
Lančok, A.
Šafářová, K.
Powiązania:: https://bibliotekanauki.pl/articles/1428957.pdf
Data publikacji:: 2012-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.Tt
75.75.-c
76.80.+y
76.60.-k
68.37.Rt
Opis:: Magnetic hyperfine fields of $Fe_{90}Zr_7B_3$ Nanoperm nanocrystalline alloy are characterized by $\text{}^{57}Fe$ Mössbauer spectrometry and $P^{57}Fe$ NMR as well as by magnetic force microscopy. $\text{}^{57}Fe$ NMR enables to distinguish a broad signal of iron atoms located in a residual amorphous matrix from a narrow one which belongs to Fe in nanograins. The former coincides with the distribution of hyperfine fields obtained from $\text{}^{57}Fe$ Mössbauer spectroscopy. In addition, it is possible to make a distinction between NMR signals of the Fe nanograins located in magnetic domains from that of the nanograins positioned in domain walls. This is confirmed by magnetic force microscopy where appearance of maze-domains is observed.
Źródło:: Acta Physica Polonica A; 2012, 121, 5-6; 1263-1265
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Mössbauer and SQUID Characterization of Iron in Human Tissue: Case of Globus Pallidus
Autorzy:: Miglierini, M.
Boča, R.
Kopáni, M.
Lančok, A.
Powiązania:: https://bibliotekanauki.pl/articles/1382185.pdf
Data publikacji:: 2014-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.80.+y
31.30.Gs
75.75.-c
87.85.jc
Opis:: Lyophilized samples of human brain tissue from the region of Globus Pallidus were investigated in powder form by $\text{}^{57}Fe$ Mössbauer spectroscopy and SQUID magnetometry. The obtained hyperfine parameters including isomer shift and quadrupole splitting exhibit a ferritin-like behaviour with high-spin Fe(III) sites. Three types of features were derived from temperature development of magnetic susceptibility: dominating diamagnetism, dominating paramagnetism, and intermediate states. The magnetic characteristics of the samples do not correlate with age of the donors.
Źródło:: Acta Physica Polonica A; 2014, 126, 1; 240-241
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja