Now showing items 41-47 of 47
Effect of compressive stress on dielectric and ferroelectric properties of 0.25PSN-0.75PLuN ceramics
The PSN-PLuN solid solutions have been prepared in the whole composition range for the first time. The dielectric, pyroelectric and hysteresis loops measurements of the 0.25PSN-0.75PLuN ceramics stress-free or under the ...
Przejście fazowe antyferroelektryk - paraelektryk w niestechiometrycznym NaNbO
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 ...
Zmiany temperaturowe współczynnika rozszerzalności liniowej NaNbO
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 ...
Klasyfikacja stałych roztworów na bazie NaNbO
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.
Fotoferroelektryczne zjawiska w monokryształach (Ba, Sr) NbO
Influence of illumination on phase transition temperature, on dielectric permittivity and on pyro currents in Ba[x]Sr[1-x]NbO was studied. Dependence of photoelectretic charge density on temperature in the region of ...
Własności dielektryczne monokryształów Pb(Cd[1/3]Nb[2/3])O
The temperaturę dependence of ε and tgδ was investigated for monocrystalline sample of Pb(Cd[1/3]Nb[2/3])O various measurement field frequencies. A strong connection between dielectric properties and field frequency ...
Przyrząd z programowaną regulacją różnicy temperatury
Principle of operation and construction of device with programmed regulation of temperature difference. Basic parameters of device and example measurements of Seebech coefficient in NaNbO were shown.