Autor: Łątka, K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Puzzling Magnetism of $Gd_3Cu_4Sn_4$
Autorzy:: Łątka, K.
Pacyna, A.
Pöttgen, R.
Schappacher, F.
Powiązania:: https://bibliotekanauki.pl/articles/1811579.pdf
Data publikacji:: 2008-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.80.+y
75.30.-m
Opis:: A polycrystalline, single phase sample of $Gd_3Cu_4Sn_4$ ($Gd_3Cu_4Ge_4$ type, Immm, a = 1473.5(1), b = 694.1(1), c = 447.2(1) pm) was synthesized by arc-melting of the elements and subsequent annealing of the sample at 1220 and 970 K, respectively. The magnetic properties of this compound were studied thoroughly by AC and DC magnetic susceptibility measurements and $\text{}^{155}Gd$ Mössbauer spectroscopy. These results reveal two antiferromagnetic phase transitions close to 13 and 8.6 K, respectively. The thermal variation of the magnetic hyperfine fields observed at two inequivalent Gd sites point to two magnetic substructures, which order independently.
Źródło:: Acta Physica Polonica A; 2008, 114, 6; 1501-1508
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Properties of SmT$\text{}_{2}$Sn$\text{}_{2}$ (T = Ni,Cu) Phases
Autorzy:: Görlich, E. A.
Kmieć, R.
Łątka, K.
Pacyna, A.
Powiązania:: https://bibliotekanauki.pl/articles/1964619.pdf
Data publikacji:: 1997-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.80.+y
72.15.Eb
Opis:: Ternary compounds SmNi$\text{}_{2}$Sn$\text{}_{2}$ and SmCu$\text{}_{2}$Sn$\text{}_{2}$ were investigated with the X-ray diffraction, magnetic susceptibility and electric resistivity methods, as well as using the $\text{}^{119}$Sn Mossbauer effect under the applied magnetic field. Magnetic susceptibilities of these compounds show the Curie-Weiss behaviour in the temperature range from 15 K to 280 K with the enhanced values of the temperature independent term χ$\text{}_{0}$. Both resistivity and magnetic measurements indicate the occurrence of the magnetic ordering in SmCu$\text{}_{2}$Sn$\text{}_{2}$ below T$\text{}_{N}$ = 8 K. The Mossbauer investigations carried out at 4.2 K under an applied magnetic field of up 6 T indicate a more complex magnetic structure and a considerable anisotropy. SmNi$\text{}_{2}$Sn$\text{}_{2}$ remains paramagnetic down to 5 K.
Źródło:: Acta Physica Polonica A; 1997, 92, 2; 319-322
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Exotic phase transitions in RERhSn compounds
Autorzy:: Łątka, K.
Kmieć, R.
Kruk, R.
Pacyna, A.
Rams, M.
Schmidt, T.
Pöttgen, R.
Powiązania:: https://bibliotekanauki.pl/articles/148856.pdf
Data publikacji:: 2003
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: magnetic properties
phase transitions
Mössbauer spectroscopy
Opis:: Crystal and magnetic properties of three equiatomic ternary RERhSn compounds (where RE = Ce, Nd, Gd) have been studied by means of X-ray diffraction, ac, and dc magnetic susceptibility measurements, as well as using Mössbauer spectroscopy with 119Sn and 155Gd resonances. CeRhSn does not order magnetically down to 2 K while NdRhSn undergoes ferromagnetic transition at TC = 10.3 K and GdRhSn orders antiferromagnetically below TN = 16 K. Our CeRhSn and NdRhSn samples become superconductive below 6.5 K and 6.9 K, respectively.
Źródło:: Nukleonika; 2003, 48,suppl.1; 35-40
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

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