Autor: Bieliński, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Susceptibility Behaviour of CuGeO$\text{}_{3}$: Comparison between Experiment and the Quantum Transfer Matrix Approach
Autorzy:: Bieliński, M.
Renard, J.-P.
Powiązania:: https://bibliotekanauki.pl/articles/2013702.pdf
Data publikacji:: 2000-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.10.Jm
75.40.Cx
75.40.Mg
Opis:: Thermodynamical properties of one-dimensional S=1/2 Heisenberg model with dimerized nearest- and uniform next-nearest-neighbour interactions are studied by the numerically exact quantum transfer matrix method and the results are applied to CuGeO$\text{}_{3}$. Suzuki-Trotter formula is used to obtain a classical system with spin σ=3/2 and effective interactions between nearest-neigbours only. Magnetic susceptibility curve is calculated and compared with new experimental results performed in a wide temperature range, revealing the presence of frustration in the model proposed for CuGeO$\text{}_{3}$.
Źródło:: Acta Physica Polonica A; 2000, 97, 5; 851-854
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Quantum Effects and Critical Behavior in Low-Dimensional Spin-1/2 Systems
Autorzy:: Kamieniarz, G.
Musial, G.
Dębski, L.
Bieliński, M.
Dekeyser, R.
Powiązania:: https://bibliotekanauki.pl/articles/1964803.pdf
Data publikacji:: 1997-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.40.Mg
64.60.-i
75.10.Hk
75.10.Jm
Opis:: The critical coupling and spontaneous magnetization curve for the 2D-Ising model are calculated using the effective-field method with correlations. An application of the method to the quantum S=1/2 1D-Heisenberg model is presented and reliable low-temperature estimates of the specific heat are evaluated.
Źródło:: Acta Physica Polonica A; 1997, 92, 2; 445-447
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Structural and Functional Properties of Ion Beam Modified Elastomers
Autorzy:: Jagielski, J.
Ostaszewska, U.
Bielinski, D.
Piatkowska, A.
Romaniec, M.
Powiązania:: https://bibliotekanauki.pl/articles/1400461.pdf
Data publikacji:: 2013-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 83.80.Va
81.40.Pq
81.40.Cd
81.40.Ef
Opis:: Studies on the use of energetic ion beams for material modification have been initiated originally within the Manhattan project and have been continuously developed since then. The consecutive steps were devoted to the studies of ion implantation into semiconductors, metals, ceramics and, most recently, organic materials. One of the latest areas of applications is modification of elastomers, commonly known as rubbers. In the present paper the results of the studies on structural and functional properties of irradiated elastomers will be presented with the special emphasis on the materials used in aviation and military applications. Among the structural modifications, a massive loss of hydrogen atoms appears as the most peculiar characteristic of irradiated elastomers. Functional properties of irradiated rubbers: microhardness and friction coefficient, will be presented and application potential of the materials discussed.
Źródło:: Acta Physica Polonica A; 2013, 123, 5; 888-891
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja