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Li‐, Sb‐ and Ta‐modified (K, Na)NbO 3 nanopowder prepared via a water‐based sol–gel method
Author(s) -
Fang Jian,
Wang Xiaohui,
Li Longtu
Publication year - 2012
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201105576
Subject(s) - thermogravimetry , differential scanning calorimetry , sol gel , materials science , transmission electron microscopy , sintering , ceramic , particle size , natural bond orbital , phase (matter) , analytical chemistry (journal) , scanning electron microscope , nuclear chemistry , atmospheric temperature range , particle (ecology) , chemistry , nanotechnology , chromatography , inorganic chemistry , composite material , molecule , organic chemistry , physics , oceanography , geology , meteorology , thermodynamics
Stable Li‐, Sb‐ and Ta‐modified (K, Na)NbO 3 (LTS‐KNN) sol and gel were successfully prepared via an economical water‐based sol–gel method. Simultaneous thermogravimetry and differential scanning calorimetry (TG‐DSC) and X‐ray diffraction showed that organic compounds were eliminated and a pure perovskite phase formed around 600 °C. Transmission electron microscopy showed that the LTS‐KNN particle size was in the range of 11–34 nm after decomposition at 600 °C. Moreover, high performance LTS‐KNN ceramic was successfully prepared at a low sintering temperature of 1000 °C by use of the nanopowder, and its room‐temperature d 33 , K p , K and loss are 311 pC/N, 46.8%, 1545 and 0.024, respectively. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)