Zobrazeno 1 - 10
of 21
pro vyhledávání: '"B. Arnscheidt"'
Publikováno v:
Journal of Applied Physics. 83:5233-5238
We have prepared C/Al2O3 multilayers by rf and rf magnetron sputtering on sapphire (1120) and silicon (100) substrates. We have analyzed their structure by x-ray reflectivity measurements in the as-deposited state and after annealing. The interface r
Publikováno v:
Journal of Physics: Condensed Matter. 8:5247-5252
Raman spectra of and crystals have been recorded in the temperature range 5 K - 300 K. undergoes only one structural phase transition at from a cubic to a trigonal structure , whereas undergoes structural phase transitions from a cubic to a trigonal
Publikováno v:
Liquid Crystals. 19:449-458
The method of differential Raman spectroscopy is developed to the case of uniaxial liquid crystals, increasing the precision of the determination of relative broadening and splitting of the polarized components of Raman bands in liquid crystals. With
Publikováno v:
Phase Transitions. 54:81-94
(NH4)2SeCl6 undergoes a structural phase transition at Tc1 = 24 K. By substitution of hydrogen by deuterium an additional phase transition can be induced at Tc2 = 37 K, whence the transition temperature of the first transition changes to Tc1 = 48 K.
Publikováno v:
Journal of Molecular Structure. 348:361-364
Publikováno v:
Journal of Molecular Structure. 348:469-472
A simple method for absorption coefficient measurement of liquids in the range 0.1–10 4 cm −1 is demonstrated and a few spectroscopic applications in this whole range are presented. The detection scheme uses an open photoacoustic cell with piezoe
Publikováno v:
Solid State Communications. 82:845-849
On deuteration (NH 4 ) 2 TeCl 6 undergoes two additional structural phase transformations at T c 2 ( x ) and T c 3 ( x ) which are investigated as a function of the deuteron concentration x by Raman scattering. T c 2 decreases monotonously from 48 K
Publikováno v:
Chinese Physics Letters. 13:394-396
Raman spectra of the internal,nodes of ND4+-ion in (ND4)(2)PbCl6 crystal have bees recorded in the temperature range of 5-300K. A new structural Phase transition was observed at 34K because of deuterium effect. Discontinuous behaviours of the interna
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