Zobrazeno 1 - 10
of 156
pro vyhledávání: '"M, Matlak"'
Autor:
M. Matlak
Publikováno v:
Phase Transitions. 85:179-182
An important improvement was made in the derivation of the thermodynamical relations at characteristic points, presented in the previous paper, to prove that the derived relations are generally valid for different type thermodynamical (discontinuous
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
M. Matlak
Publikováno v:
Phase Transitions. 81:857-880
We define the characteristic temperature T C of a material by using the behaviour of the specific heat in the vicinity of this temperature: C p,N (T ) = f(1 − (T/T C ),p,N ) for T T C where p is the external pressure and N is the number of particle
Publikováno v:
Physica B: Condensed Matter. 387:122-129
The metallic contact electrode was attached to the one surface of the ferroelectric semiconducting Pb5Ge3O11 single crystal and at opposite ends of this electrode wires were glued. A voltage has been applied to the wires and the resistance R of the c
Publikováno v:
Journal of Alloys and Compounds. 423:47-51
Ternary GdPdX (X = Al, Si, Ga, Ge, In, Sn) compounds, obtained by the induction melting, crystallize in the stable orthorhombic structure similarly to GdRhAl. The magnetic ordering temperatures of the GdPdX and GdRhAl compounds are close to 30 K. The
Publikováno v:
Phase Transitions. 79:525-534
We observed the transition from the ferroelectric (FE) to paraelectric (PE) phase in the semiconducting, ferroelectric Pb5Ge3O11 single crystal with the use of the contact electrode method. To this purpose a thin, metallic layer was placed onto the P
Publikováno v:
physica status solidi (b). 242:337-341
We consider the Hubbard model for the sc lattice which consists of interacting, parallel lying dimer (trimer) planes. Each plane is a collection of equidistant, interacting, parallel lying dimers (trimers). We apply the exact solution of the dimer (t
Publikováno v:
physica status solidi (b). 242:317-321
We express the Hubbard dimer Hamiltonian H d = Σ 16 α=1 E α |E α >
Publikováno v:
physica status solidi (b). 241:R23-R26
A simple electrical set-up to detect phase transitions is proposed and applied to a series of investigated samples: Gd, Cr, TiNi and CuZnSn, all exhibiting different types of phase transitions. The sample is glued to a contact electrode (here Ag) and
Autor:
M. Matlak, Mariusz Pietruszka
Publikováno v:
physica status solidi (b). 241:163-169
We investigate theoretically and next experimentally a new possibility to detect critical temperatures of solids by means of a very simple electrical circuit consisting of an analyzed sample (exhibiting phase transitions) and a contact electrode (her