Zobrazeno 1 - 10
of 87
pro vyhledávání: '"L. Žigas"'
Publikováno v:
Journal of Physics and Chemistry of Solids. 101:5-9
The paper presents the results of the investigations of electronic potential dependencies upon the normal co-ordinates of B 1 u mode in a large temperature range for the Sb 2 S 3 crystal. The results revealed high anharmonicity of Sb and S atoms in t
Publikováno v:
Phase Transitions. 90:312-316
Anomalous behavior has been observed in the temperature range of T = 140–145 °C. The electric current I(T) of SbSI and SbSeI crystals along the c(z) axis changes significantly at the region of the antiferroelectric phase transition when DC voltage
Publikováno v:
Journal of Physics and Chemistry of Solids. 83:117-120
Experimental results have shown that the capacitance (dielectric permittivity) and electrical conductivity of SbSI and SbSeI crystals along the c(z)-axis change significantly in the region of the antiferroelectric phase transition when DC voltage is
Publikováno v:
Journal of Physics and Chemistry of Solids. 75:194-197
SbSCl 0.1 I 0.9 crystals were grown from the vapor phase and reflection spectra were recorded using a Fourier-transform IR spectrometer. The optical parameters and optical functions along the c axis were calculated using an improved Kramers–Kronig
Publikováno v:
Ferroelectrics. 445:107-113
The contribution of soft mode at Sb atom's site to the temperature dependences of Sb atom's equilibrium position's difference Δz33 (T) has been studied theoretically, when SbSBr crystal is deformed in direction of c(z)-axis in paraelectric and in fe
Publikováno v:
Physica B: Condensed Matter. 407:774-777
The contribution of soft mode at Sb atom's sites, to the temperature dependences of Sb atom's equilibrium position's difference Δ z ( T ) has been studied theoretically, when SbSBr crystal is deformed along a ( x ), b ( y ) and c ( z )-axis in parae
Publikováno v:
Ferroelectrics. 413:342-349
The contribution of Sb atoms soft mode to the temperature dependences of the piezoelectric modulus e(T) and atomic equilibrium position's difference Δz(T) has been studied theoretically, when SbSI crystal is deformed along crystallographic x(a), y(b
Publikováno v:
Ferroelectrics. 413:434-442
The temperature dependence of phonon dispersion, total and partial phonon DOS of SbSBr crystal have been determined in paraelectric phase at T = 30 K and in ferroelectric phase at T = 11 K using FP—LAPW method in the framework of DFT along with the
Publikováno v:
Ferroelectrics. 425:45-53
The modified SbSI (ceramic) has been grown by Bridgman method. The dielectric permitivity of modified SbSI along c(z)-axis has been measured using LCR meter as a function of temperature at fixed frequency 1 KHz. The nature of ferroelectric phase tran