Stabilization of the Ferroelectric γ-Phase of KNO_3 by Doping with Na^+, Determined by the Acoustic Emission Method

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著者

    • SHIMADA Shiro
    • Depaetment of Applied Chemistry, Faculty of Engineering, Hokkaido University
    • AOKI Takenori
    • Depaetment of Applied Chemistry, Faculty of Engineering, Hokkaido University

抄録

A stabilized region of the ferroelectric γ-phase of KNO<SUB>3</SUB> doped with Na<SUP>+</SUP> ions was detected by simultaneous acoustic emission (AE)-differential thermal analysis (DTA). The γ to α phase transition in KNO<SUB>3</SUB> was affected by doping with Na<SUP>+</SUP>, which lowered the onset temperature from 60 °C in the pure samples to 38 and 42 °C for 0.5 and 1 mol% doped samples, respectively. At 5 mol% Na<SUP>+</SUP>, the γ phase was stabilized at room temperature (25 °C). The AE results were confirmed by high-temperature X-ray diffraction.

収録刊行物

  • Chemistry letters

    Chemistry letters 1996(5), 393-394, 1996-05-05

    The Chemical Society of Japan

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各種コード

  • NII論文ID(NAID)
    10003740256
  • NII書誌ID(NCID)
    AA00603318
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    03667022
  • データ提供元
    CJP書誌  J-STAGE 
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