J.K. Gimzewski, T.A. Jung, et al.
Surface Science
We find that many compositions of the form M+M22+Nb5O15 (M+ = Na, K, Rb; M2+ = Sr, Ba) have the tungsten-bronze structure and are ferroelectric. The coefficients of the Devonshire free energy function are determined for crystals in the KSr2Nb5O15 - LaNb3O9 system. The results show that very large room temperature linear electro-optic coefficients can be obtained. © 1968.
J.K. Gimzewski, T.A. Jung, et al.
Surface Science
K.N. Tu
Materials Science and Engineering: A
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
T. Schneider, E. Stoll
Physical Review B