Title :
Li-containing ceramics with the TWB structure as new disordered ferroelectric materials
Author :
Kryshtop, V.G. ; Sidorenko, E.N. ; Turik, A.V.
Author_Institution :
Inst. of Phys., Rostov State Univ., Russia
Abstract :
Temperature-frequency dependences of dielectric permittivity for Li-containing ceramics of solid solutions BaxPb4-xLi2Nb10O30 with the tetragonal wolfram bronze (TWB) structure have been studied. The presence of ferroelectric-paraelectric phase transition and deep low-frequency dispersion of the dielectric permittivity have been established for all studied compounds. Possible mechanisms responsible for dielectric dispersion and their connection with disordered arrangement of Li cations have been discussed
Keywords :
barium compounds; ferroelectric ceramics; ferroelectric transitions; lead compounds; lithium compounds; permittivity; (BaPb)4Li2Nb10O20; BaxPb4-xLi2Nb10O 30; Li cations; Li-containing ceramics; TWB structure; deep low-frequency dispersion; dielectric permittivity; disordered arrangement; disordered ferroelectric materials; ferroelectric-paraelectric phase transition; temperature-frequency dependences; tetragonal wolfram bronze structure; Bonding; Ceramics; Chemicals; Dielectrics; Earth; Ferroelectric materials; Permittivity; Physics; Piezoelectric materials; Solids;
Conference_Titel :
Applications of Ferroelectrics, 1998. ISAF 98. Proceedings of the Eleventh IEEE International Symposium on
Conference_Location :
Montreux
Print_ISBN :
0-7803-4959-8
DOI :
10.1109/ISAF.1998.786741
