Modified lead-free potassium sodium niobate (KNN) and their properties

Alkoy E. M., Yavuz A. B., Alkoy S.

2012 IEEE International Ultrasonics Symposium, IUS 2012, Dresden, Almanya, 7 - 10 Ekim 2012, (Tam Metin Bildiri)

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/ultsym.2012.0555
  • Basıldığı Şehir: Dresden
  • Basıldığı Ülke: Almanya
  • Anahtar Kelimeler: dielectric properties, impedance spectroscopy, lead-free, Li and Li-Ta modified KNN
  • Maltepe Üniversitesi Adresli: Evet

Özet

In this study, effects of lithium and tantalum modification on the structural and dielectric properties of potassium sodium niobate (KNN) ceramics were investigated. All ceramics were fabricated by pressureless sintering technique. Li, Li-Ta modifications were improved densification and thus dielectric properties. The dielectric properties of Li and Ta modified KNN ceramics were analyzed using AC impedance spectroscopy as a function of frequency from 100 Hz to 10 MHz in temperature range from 673 K to 798 K. © 2012 IEEE.