S. Semak
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View article: On the photovoltaic effect asymmetry in ferroelectrics
On the photovoltaic effect asymmetry in ferroelectrics Open
Despite symmetrical polarization, the magnitude of a light-induced voltage is known to be asymmetric with respect to poling sign in many photovoltaic (PV) ferroelectrics (FEs). This asymmetry remains unclear and is often attributed to extr…
View article: The correlation between electric polarization and magnetic properties in [N(C2H5)4]2CoCl2Br2 crystal at low temperatures
The correlation between electric polarization and magnetic properties in [N(C2H5)4]2CoCl2Br2 crystal at low temperatures Open
The ferroelectric and magnetic properties of the potential magnetic multiferroic – [N(C2H5)4]2CoCl2Br2 solid solution are reported. This crystal was found to possess the proper ferroelectric phase transition at T1 = 249.5 K and possible ma…
View article: Influence of ferroelastoelectric phase transition on the temperature evolution of the optical absorption edge of an ammonium dihydrate tetrachlorocuprate crystal
Influence of ferroelastoelectric phase transition on the temperature evolution of the optical absorption edge of an ammonium dihydrate tetrachlorocuprate crystal Open
Ïðèñâÿ÷åíî äîñëiäaeåííþ òåìïåðàòóðíî¨åâîëþöi¨îïòè÷íîãî êðàþ ïîãëèíàííÿ êðèñòàëiâ (NH 4 ) 2 CuCl 4 •2H 2 O â îáëàñòi ñåãíåòîåëàñòîåëåêòðè÷íîãî ôàçîâîãî ïåðåõîäó.Ïîêàçàíî, ùî íèçüêîåíåðãåòè÷íà äiëÿíêà êðàþ âëàñíîãî ïîãëèíàííÿ ì๠åêñïîíåíöià…
View article: Thermochromic properties of nano- and microcomposites based on (NH<sub>2</sub>(C<sub>2</sub>H<sub>5</sub>)<sub>2</sub>)<sub>2</sub>CuCl<sub>4</sub> crystals
Thermochromic properties of nano- and microcomposites based on (NH<sub>2</sub>(C<sub>2</sub>H<sub>5</sub>)<sub>2</sub>)<sub>2</sub>CuCl<sub>4</sub> crystals Open
The absorption spectra of [NH2(C2H5)2]2CuCl4 (DEACC) nanocrystals and microcrystals incorporated into the polymer matrices were investigated.The main attention was devoted to the size eects manifestation in the spectral properties of the n…
View article: The effect of metal ion substitution on the dielectric dispersion in NH2(CH3)2Ga_{1-x}Cr_x(SO4)2 · 6H2O crystals
The effect of metal ion substitution on the dielectric dispersion in NH2(CH3)2Ga_{1-x}Cr_x(SO4)2 · 6H2O crystals Open
The comparative study of the dielectric dispersion in the vicinity of the ferroelectric-ferroelastic phase transition in NH2(CH3)2Ga1-xCrx(SO4)2 • 6H2O (x = 0; 0.065) crystals was performed.As it follows from the analysis of the temperatur…