La. Reznichenko et al., Ferroelectric elastance of sodium niobate-lithium niobate solid solutions in relation to A-O bond covalence, TECH PHYS, 45(11), 2000, pp. 1437-1440
The ferroelectric elastance of (Na, Li, A(0.5)')NbO3 solid solutions was fo
und to vary directly with the total electronegativity of elements A (ENSigm
aA), that is, with the A-O bond covalence at B = const. Using ENSigmaA valu
es and the position on the phase diagram, one can determine the solid solut
ion parameters optimum for use in high-frequency (A(') = Sr, Pb), medium-fr
equency (A' = Cd), and elevated-temperature (A' = Cd) devices. (C) 2000 MAI
K "Nauka / Interperiodica".