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Wyświetlanie pozycji 41-48 z 48
Zmiany temperaturowe współczynnika przewodnictwa ciepła niobianu sodu
(1986)
Construction of the vacuum thermostat intended for measuring the heat conductivity of ferroelectrics and its
temperature changes is presented.
The properties of $NaNbO_3$ are studied in order to apply it in building the ...
Wpływ redukcji tlenowej na zmiany temperaturowe przewodnictwa elektrycznego niobanu sodu
(1980)
A design of a new quartz thermostate is described. It controls:
1) The temperature of the sample from ambient temperature to 1270 K,
2) The pressure of the atmospheric air or other gases within the range from $133,3°10^{-6}$ ...
Wpływ pola magnetycznego na własności $BaTiO_3$
(1986)
Influence of the constant magnetic field on temperature changes of the dielectric constant and on the electric
conductivity of $BaTiO_3$. It was shown for this material that together with the increase of the magnetic ...
Wpływ domieszek na własności elektryczne $NaNbO_3$
(1986)
Influence of the modifiers Ba, Ca, La and Ti on electric properties of $NaNbO_3$ was studied. Data concerning their
influence on electric conductivity, dielectric permeability and Curie point are presented. Dependance ...
Prądy ograniczone ładunkiem przestrzennym dla $(Pb_{0,95}Sr_{0,05})$ $(Zr_{0,53}Ti_{0,47})O_3$ z domieszkami 3% mol $PbO$, 1% mol $La_2O_3$, 1% mol $Nb_2O_5$
(1980)
The influence of the admixture of 3% $PbO$, 1% $La_2O_3$ and 1% $Nb_2O_5$ on the electric properties (electric
permeability, electric conductivity, Seebeck coeficient and current - voltage, current - time characteristics) ...
Wpływ defektów tlenowych na zmiany temperaturowe przewodnictwa elektrycznego niestechiometrycznego niobianu sodu
(1984)
Measurements of electrical conductivity of nonstoichiometric $NaNbO_3$ were made in the air atmosphere under normal
and reduced pressure. It was stated that the value of electrical conductivity is strongly effected by ...
Otrzymywanie ferroelektrycznych ceramik o dużej gęstości
(1984)
The method of hot pressing permits to obtain the ceramics of high density.
It consist in simulate neons application of high temperature and pressure on charge made of pressed powder.
The authors elaborated several devices ...
Badanie właściwości termoelektrycznych roztworu stałego $Na_{1-x}Li_xNbO_3$ (dla x = 0 – 0,06)
(2017)
The article presents theoretical facts of thermoelectric phenomena (i.e. Joule effect, Seebeck
effect, Thomson effect and Peltier effect). Lead-free $Na_{1-x}Li_xNbO_3$ ceramics (x = 0 – 0,06) were
synthesized by a ...