Rocznik Naukowo-Dydaktyczny: Recent submissions
Now showing items 1241-1260 of 3302
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Fotoferroelektryczne zjawiska w monokryształach $(Ba, Sr) Nb_2O_6$
(1990)Influence of illumination on phase transition temperature, on dielectric permittivity and on pyro currents in $Ba_xSr_{1-x}Nb_2O_6$ was studied. Dependence of photoelectretic charge density on temperature in the region of ... -
Własności dielektryczne monokryształów $Pb(Cd_{1/3}Nb_{2/3})O_3$
(1990)The temperaturę dependence of ε and tgδ was investigated for monocrystalline sample of $Pb(Cd_{1/3}Nb_{2/3})O_3$ various measurement field frequencies. A strong connection between dielectric properties and field frequency ... -
Osobliwe punkty na fazowym diagramie T-x dla Pb (Zr[1-x]Ti[x]) O[3]
(1990)The temperature dependences of dielectrical permitivity and the electric conductivity for Pb(Zr[1-x]Ti[x])O[3] single crystals have been investigated. The additional evidence, for the existence of the tricritical points ... -
Zależność między szerokością pasma wzbronionego a temperaturą Curie w ferroelektrycznych roztworach stałych ze strukturą typu perowskitu
(1990)On the base of the spectral dependence of the photoconductivity the width of forbidden band E[g] was determined in ferroelectric solid solutions: x PbTiO[3] – (1-x)SrTiO[3] I, x PbTiO[3] – (1-x)PbZrO[3] II, AgNbO[3] – ... -
Przejście fazowe antyferroelektryk - paraelektryk w niestechiometrycznym $NaNbO_3$
(1990)The theory of AFE-PE phase transformation as formulated by Kittel is reviewed. The experimental values obtained from dielectric measurements are related, to the parameters of Kittel's thermodynamic function. Some of the ... -
Klasyfikacja stałych roztworów na bazie $NaNbO_3$
(1990)The criterion of division solid solutions, based on sodium niobate in to ferro-, and antiferroelectric materials is described. The results of measurements are compiled in the table. -
Zmiany temperaturowe współczynnika rozszerzalności liniowej $NaNbO_3$
(1990)The operation principle of a dilatometer is described. The temperature changes of the coefficient of linear expansion were measured in temperature range between minus 196°C and plus 740°C. Linear expansion coefficient ... -
Rocznik Naukowo-Dydaktyczny. Z. 136. Prace Fizyczne 6
(Wydawnictwo Naukowe Wyższej Szkoły Pedagogicznej, Kraków, 1990) -
W dawnej Jagiellonce
(1990)