کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10653133 1002829 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High pressure behaviour of KHSO4 studied by electrical impedance spectroscopy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
High pressure behaviour of KHSO4 studied by electrical impedance spectroscopy
چکیده انگلیسی
Measurements of the electrical conductivity were performed in KHSO4 at pressures between 0.5 and 2.5 GPa and in the temperature range 120-350 °C by the use of the impedance spectroscopy. The temperatures of the α-β phase transition (TTr) and of the melting (Tm), determined from the Arrhenius plots ln(σT) vs. 1/T, increase with pressure up to 1.5 GPa having dT/dP∼+45 K/GPa. Above the pressure 1.5 GPa, the pressure dependencies of TTr and Tm are negative dT/dP∼−45 K/GPa. At pressures above 0.5 GPa, the reversible decomposition of KHSO4 into K3H(SO4)2+H2SO4 (and probably into K5H3(SO4)4+H2SO4) affects the electrical conductivity of KHSO4, with the typical values of the protonic electrical conductivity, c. 10−1 S/cm at 2.5 GPa.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 136, Issue 1, October 2005, Pages 16-21
نویسندگان
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