La(Mg1/2Ti1/2)O-3 - Based materials for microwave applications
authors Seabra, MP; Salak, AN; Avdeev, M; Ferreira, VM
editors Martins, R; Fortunato, E; Ferreira, I; Dias, C
nationality International
journal ADVANCED MATERIALS FORUM II
author keywords microwave; dielectrics; perovskites; ceramics
keywords DIELECTRIC-PROPERTIES; SYSTEM; PEROVSKITES
abstract (1-x)LMT-xATiO(3) (A = Ba, Sr and Ca) (0 less than or equal to x < 1) ceramics were prepared by a nonconventional chemical route based on Pechini method. LMT and ATiO(3) were found to form solid solutions in whole compositional range. In all cases, dense (>95%), homogeneous and single-phase ceramics were obtained. In each system the increase of ATiO(3) content resulted in a sequence of structural transformations. Dielectric characterization of these ceramics was performed at microwave frequencies and their compositional dependence was evaluated. Promising microwave dielectric properties (epsilon(r) = 60, tau(f) = -2 ppm/degreesC and Q(.)f = 9600GHz) were achieved for the composition 0.5La(Mg1/2Ti1/2)O-3/0.5BaTiO(3).
publisher TRANS TECH PUBLICATIONS LTD
issn 0255-5476
isbn 0-87849-941-5
year published 2004
volume 455-456
beginning page 45
ending page 49
web of science category Materials Science, Multidisciplinary
subject category Materials Science
unique article identifier WOS:000222018500010

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