کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9761632 | 1498422 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transport properties of Li2O-MnO2-B2O3 glasses
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Lithium borate containing MnO2 glasses have been synthesized by melt quenching technique over a wide composition range. Frequency and temperature dependent conductivity measurements have been carried out in the range of 10 Hz to 13 MHz and at a temperature range of 298 K-523 K respectively. The impedance plots show only one semicircle indicating the presence of one type of conduction mechanism. The analysis of dc conductivity show that the conductivity is dominated by Li+ ions and the presence of MnO2 has negligible effect. The ac conductivity data has been analysed by fitting the data into Almond-West type power law behaviour ÏÂ =Â Ï(o)Â +Â AÏs. The power law exponent s is also determined and it is found to decrease with increase of temperature. We have also carried out the scaling behaviour of the ac conductivity and it is seen that all the curves coalesce on to a master curve suggesting that the ion transport mechanism remains unaffected at all temperatures. The results are discussed in the light of the structure of borate glass network.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 176, Issues 15â16, 12 May 2005, Pages 1393-1401
Journal: Solid State Ionics - Volume 176, Issues 15â16, 12 May 2005, Pages 1393-1401
نویسندگان
V.C. Veeranna Gowda, R.V. Anavekar,