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2009 | 7 | 2 | 159-163
Tytuł artykułu

Sintering, microstructures and dielectric properties of Ba1−xPbx(Ti1−xLix)O3−3xF3x ferroelectric ceramics

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Various compositions (1−x)BaTiO3 + xPbF2 + xLiF were prepared, shaped to pellets then sintered at 900°C for 2 h in gold sealed tubes. The purity and the symmetry of the obtained samples were checked by X-ray diffraction. A new solid solution with Ba1−x Pbx (Ti1−x Lix ) O3−3x F3x formula occurs in the composition range 0 ≤ x ≤ 0.20. SEM observations were performed on polished and fractured ceramics. The complex permittivity was measured as a function of temperature (−120°C ≤ T ≤ 250°C) and frequency (50 Hz ≤ f ≤ 4 × 107 Hz). The dielectric performances are the best for ceramic Ba0.97Pb0.03(Ti0.97Li0.03)O2.91F0.09. The real component ε′, exhibits a maximum of approximately 7500 at the ferroelectric Curie temperature T C ≈ -18°C, the dielectric losses tan δ value being 0.012. At room temperature, the relaxation frequency f r is around 40 MHz for this ceramic. This novel ferroelectric oxifluoride is a promising material for applications, in particular in the field of Z5U multilayer capacitors. [...]
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Wydawca

Czasopismo
Rocznik
Tom
7
Numer
2
Strony
159-163
Opis fizyczny
Daty
wydano
2009-06-01
online
2009-04-09
Twórcy
  • Faculty of Chemistry, USTHB, El-Alia, 16311, Bab-Ezzouar, Algeria, ikra@wissal.dz
autor
  • ICMCB, CNRS, 33608, Pessac, France
Bibliografia
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  • [8] M. Maglione, R. Böhmer, A. Loidl, U.T. Höchli, Phys. Rev. B 40, 11441 (1989) http://dx.doi.org/10.1103/PhysRevB.40.11441[Crossref]
  • [9] S. Kazaoui, J. Ravez, C. Elissalde, M. Maglione, Ferroelectrics 135, 85 (1992)
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  • [12] L. Taïbi-Benziada, H. S. Hilal, R. Von Der Mühll, Sol. Stat. Sci. 8, 922 (2006) http://dx.doi.org/10.1016/j.solidstatesciences.2006.01.017[Crossref]
  • [13] M. Meyar, L. Taïbi-Benziada, J. Eur. Ceram. Soc. 27, 1097 (2007) http://dx.doi.org/10.1016/j.jeurceramsoc.2006.05.035[Crossref]
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-008-0063-y
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