Microwave Dielectric Properties of Bi2O3-TiO2 Composite Ceramics

  • Published : 2003.04.01


B $i_2$ $O_3$-Ti $O_2$ composite dielectric ceramics have been prepared by a conventional solid state ceramic route. The composite ceramics were prepared with starting materials of different origin and the microwave dielectric properties were investigated. The sintered ceramics were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray microanalysis, Raman and microwave methods. Structural and microstructural analyses identified two separate phases: Ti $O_2$(rutile) and B $i_2$ $Ti_4$0$_{11}$. The separate grains of titania and bismuth titanate were distributed uniformly in the ceramic matrix. The composition 0.88Ti $O_2$-0.12B $i_2$ $Ti_4$ $O_{11}$ was found to have a Q$\times$f of 9300 GHz (measured at a frequency of 3.9 GHz), a temperature coefficient of frequency, $\tau$$_{cf}$ near zero and a high relative permittivity, $\varepsilon$r of 83. The microwave dielectric properties were measured down to 20$^{\circ}$K K. The quality factor increased on cooling the ceramic samples.les.


  1. Int. Mater. Rev. v.43 no.5 R.Ubic;I.M.Reaney;W.E.Lee
  2. Jpn. J. of App. Phy. v.32 Microwave Characteristics of TiO₂­Bi₂O₃ Dielectric Resonator K.Fukuda;R.Kitoh;I.Awai
  3. Ferroelectrics v.209 Dielectric Properties of Ferroelectric Bi Ti O Ceramics S.P.Yordanov;CH.P.Carapanov;I.S.Ivanov;P.T.Cholakov
  4. Nature v.330 no.6143 High Strength Ceramics through Colloidal Control to Remove Defects N.McN Alford;J.D.Birchall;K.Kendall
  5. Matls. Sci. & Technol. v.2 Engineering Ceramics The Process Problem N.McN Alford;J.D.Birchall;K.Kendall
  6. Brit. Ceram. Proc. v.39 Back Streese and the Sintering of Composites W.J.Clegg;N.McN Alford;J.D.Birchall
  7. J. Am. Ceran. Soc. v.83 no.5 P.Duran;CMoure;M.Villegas;J.Tartaj;A.C.Cabaallero;J.F.Fernandez
  8. J. Am. Ceram. Soc. v.83 no.1 Microwave Dielectric Loss of Titanium Oxide A.Templeton;X.Wang;S.J.Penn;S.J.Webb;L.F.Cohen;N.McN Alford

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