Size-controllable synthesis of lithium niobate nanocrystals using modified Pechini polymeric precursor method

Yerlikaya C., ULLAH N., Kamali A. R., Kumar R. V.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, cilt.125, sa.1, ss.17-22, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 125 Sayı: 1
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1007/s10973-016-5336-7
  • Dergi Adı: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.17-22
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Nanopowders of lithium niobate (LiNbO3, LN) were synthesized by a water-based modified Pechini method, in which Li2CO3 and ammonium niobate (v) oxalate hydrate (C4H4NNbO9 center dot xH(2)O) are used as the Li and Nb source materials, respectively. The kinetics of formation of the intermediate gelatinous precursor was studied by thermal gravimetry and differential scanning calorimetry. The LN nanoparticles produced by calcining of the gel at various temperatures were characterized by X-ray diffraction and scanning electron microscopy. The effect of the calcination temperature on the morphology and structure of LN nanoparticles produced is investigated. The particle and crystallite sizes of the LN prepared could be controlled in the range of 20-250 nm by changing the calcination temperature of the gelatinous precursor.