Temat: Cx - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Structural and Magnetic Properties of the $PrNi_{1-x}Cu_{x}Al$ Series
Autorzy:: Fikáček, J.
Javorský, P.
Klicpera, M.
Šantavá, E.
Powiązania:: https://bibliotekanauki.pl/articles/1534261.pdf
Data publikacji:: 2010-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.40.Cx
Opis:: Polycrystalline samples of $PrNi_{1-x}Cu_{x}Al$ series were studied by X-ray diffraction, magnetization and specific heat. The hexagonal ZrNiAl-type structure is preserved in the whole series. Compounds with x up to 0.4 order antiferromagnetically with the Néel temperatures between 3 and 5 K. The rest of the compounds (x = 0.5-0.9) exhibits a transition into a spin glass state below the freezing temperatures around 4 K. The analysis of the specific heat data reveals a quasi-doublet ground state well separated from higher crystal field levels in the whole series.
Źródło:: Acta Physica Polonica A; 2010, 118, 5; 884-885
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Transition from Mixed-Valence to Trivalent Cerium State in Ce(Ni,Cu)Al Series
Autorzy:: Čermák, P.
Javorský, P.
Šantavá, E.
Powiązania:: https://bibliotekanauki.pl/articles/1534620.pdf
Data publikacji:: 2010-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.40.Cx
75.30.Mb
Opis:: In this work we present the study of the part of Ce(Ni,Cu)Al series from the pure CeNiAl to 30% of copper concentration, which illustrates the transition from mixed-valence state of CeNiAl to the trivalent state in CeCuAl. The work is based on X-ray diffraction, magnetization and specific heat measurement. The results indicate smooth transition between the mixed-valence and trivalent cerium state. The specific-heat data reveal increase of the Sommerfeld γ coefficient with copper concentration.
Źródło:: Acta Physica Polonica A; 2010, 118, 5; 926-928
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Specific Heat and Magnetism of $LuFe_6Al_6$
Autorzy:: Svoboda, P.
Andreev, A.
Šantavá, E.
Šebek, J.
Powiązania:: https://bibliotekanauki.pl/articles/1813662.pdf
Data publikacji:: 2008-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.40.Cx
65.40.Ba
Opis:: Here we present the results of the zero-field specific heat study of the $LuFe_6Al_6$ single crystal. The specific heat data were analyzed as a sum of the phonon, electronic, and magnetic contributions, respectively. The analysis of the phonon part involves three acoustic and 36 optical branches, respectively, all of them corrected for the anharmonicity. The magnetic part of the specific heat was obtained by subtracting the electronic and the phonon part from the experimental specific heat and the magnetic entropy was calculated.
Źródło:: Acta Physica Polonica A; 2008, 113, 1; 307-310
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Lattice Heat Capacity in RTAl (R = Y, Lu;T = Ni, Cu, Pd) Compounds
Autorzy:: Daniel, P.
Javorský, P.
Prchal, J.
Daniš, S.
Šantavá, E.
Powiązania:: https://bibliotekanauki.pl/articles/1813674.pdf
Data publikacji:: 2008-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 65.40.Ba
75.40.Cx
Opis:: We present analysis of the specific heat of the RTAl (R = Y, Lu;T = Cu, Ni, Pd) compounds. We focus on the lattice contribution and analyze the dependence of all the characteristic parameters in the Debye and Einstein models on the atomic masses and interatomic distances.
Źródło:: Acta Physica Polonica A; 2008, 113, 1; 331-334
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Heat Capacity and Susceptibility of $CeCu_4Al$
Autorzy:: Reiffers, M.
Gažo, E.
Timko, M.
Kowalczyk, A.
Toliński, T.
Andrzejewski, B.
Šebek, J.
Šantavá, E.
Powiązania:: https://bibliotekanauki.pl/articles/1813775.pdf
Data publikacji:: 2008-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.40.Cx
75.30.Mb
Opis:: The heat capacity in the applied magnetic field up to 9 T, susceptibility and magnetization of polycrystalline $CeCu_4Al$ are presented. The determined electronic heat capacity coefficient γ= 210 mJ $mol^{-1} K^{-2}$ confirmed heavy fermion character of this compound. Magnetic ordering was not observed down to 0.5 K. Magnetic properties confirm these observations.
Źródło:: Acta Physica Polonica A; 2008, 113, 1; 425-428
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 6.

Tytuł:: Low Temperature Anomalies in the Specific Heat and Magnetic Susceptibility of $Na_{0.7}CoO_2$ Samples
Autorzy:: Baran, A.
Zorkovská, A.
Feher, A.
Šebek, J.
Šantavá, E.
Hejtmánek, J.
Veverka, M.
Bradarić, I.
Ružička, M.
Powiązania:: https://bibliotekanauki.pl/articles/1813849.pdf
Data publikacji:: 2008-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.40.Cx
72.80.Ga
Opis:: We present a comparative study of $Na_{0.7}CoO_2$ samples obtained from three different sources and prepared by different methods. The specific heat and magnetic susceptibility measurements in the temperature range 2-300 K show substantial influence on the observed anomalies, which underlines that the system is extremely sensitive to preparation protocols.
Źródło:: Acta Physica Polonica A; 2008, 113, 1; 495-498
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 7.

Tytuł:: Ti-Induced Ferromagnetism and the Specific Heat of $CaTi_xRu_{1-x}O_3$ (x=0, 0.005, 0.03)
Autorzy:: Zorkovská, A.
Baran, A.
Kajňaková, M.
Feher, A.
Šebek, J.
Šantavá, E.
Bradarić, I.
Powiązania:: https://bibliotekanauki.pl/articles/1813685.pdf
Data publikacji:: 2008-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 74.70.Pq
75.40.Cx
72.80.Ga
Opis:: The influence of Ti substitution on the specific heat of the $CaTi_xRu_{1-x}O_3$ system at low concentrations x=0, 0.005, and 0.03 was studied in the temperature range of 2-300 K at magnetic fields up to 9 T. Small peak was revealed in the C/T vs. $T^2$ dependence at around 3 K, which are field sensitive (the electronic specific heat coefficient γlinearly decreases with the increase in magnetic field), and might be connected to some kind of magnetic ordering. The coefficient γis suppressed also by Ti substitution.
Źródło:: Acta Physica Polonica A; 2008, 113, 1; 355-358
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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