Modified Lead-Free Potassium Sodium Niobate (KNN) and Their Properties

MENŞUR ALKOY E., YAVUZ A. B., Alkoy S.

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

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