Details

Autor(en) / Beteiligte

• Jin, Qi
• Jiang, Minhong
• Han, Shengnan
• Yan, Yafei

Titel

Microstructure, optical and electrical properties of Bi and Ba co-doped K0.52Na0.48NbO3 transparent ceramics

Ist Teil von

• Journal of materials science. Materials in electronics, 2018-08, Vol.29 (15), p.13407-13417

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A new Bi and Ba co-doped K 0.52 Na 0.48 NbO 3 transparent ceramics were synthesized by using solid-state reaction method. Their microstructure, optical and electrical properties were studied. The results show that the obtained compact ceramic has a perovskite polycrystalline structure with cubic phase. Refinement on the crystalline structure shows that the Bi and Ba co-doping results in forming an interstitial solid solution in K 0.52 Na 0.48 NbO 3 ceramic. An appropriate amount of Bi and Ba co-doping is helpful for improving the transparency and densification of the ceramics. The most transparency of the samples reaches a high value of about 60% in the near-IR region. The dielectric constant–temperature spectrum shows that with increasing the Bi and Ba content the dielectric constant–temperature transition peaks become to be more flat. The complex impedance plots exhibit two impedance semicircles identified within the frequency range of 1 kHz–1 MHz for all samples, which is explained by the grain and grain boundary effects. The presence of non-Debye type of relaxation has been observed by a complex impedance analysis.