Correlation between phase transitions and piezoelectric properties in lead-free (K,Na,Li)NbO3-BaTiO3 ceramics

Cheol Woo Ahn, Chee Sung Park, Dwight Viehland, Sahn Nahm, Dong Heon Kang, Kyoo Sik Bae, Shashank Priya

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)


In this manuscript, we report the polymorphic phase transitions, structural changes and piezoelectric properties of alkali niobate based lead-free ceramics. The phase transitions were characterized as a function of alkali niobate content at room temperature. The results clearly demonstrate that in this system high piezoelectric properties are achieved for a specific fraction of ferroelectric orthorhombic (O) and tetragonal (T) phases. Using Rietveld and powder diffraction analysis, a correlation was established among the piezoelectric response, the fraction of O and T phases, and KNN ratio for three different systems of (K,Na)NbO3-BaTiO3 (KNN-BT), KNN-LiNbO3 (LN), and (K,Na,Li)NbO3 (KNLN)-BT.

Original languageEnglish
Pages (from-to)8880-8883
Number of pages4
JournalJapanese journal of applied physics
Issue number12
Publication statusPublished - 2008 Dec 19


  • (K,Na,Li)NbO -BaTiO
  • Lead-free piezoelectric ceramics
  • Phase transition

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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