کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7121046 | 1461463 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polaronic transport in antimony-vanadium tellurate glasses at high temperatures
ترجمه فارسی عنوان
حمل و نقل پلیارون در شیشه های انتراسیت وانادیم در دمای بالا
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
کنترل و سیستم های مهندسی
چکیده انگلیسی
The ternary bulk glasses of the form (60-x)V2O5-40TeO2-xSb with 0â¯â¤â¯xâ¤15 (in mol%) were prepared by using the standard melt quenching technique. The dc electrical conductivity of the mentioned samples was investigated within the temperature range of 296-408â¯K. The dc conductivities at 370â¯K, with values in the range of 4.80â¯Ãâ¯10â6-1.08â¯Ãâ¯10â4â¯Sâ¯cmâ1, were found to decrease with increase of Sb content. The experimental temperature-dependency of conductivity and the variation of the pre-exponential factor were interpreted in terms of polaron hopping theory. It founds that within the studied temperature range, the non-adiabatic small polaron hopping (NASPH) mechanism for electrons between different valent states of vanadium ions is applicable. The ratio of wave function decay (tunneling factor α) was found to be 2.26â¯Ãâ¯108â¯cmâ1 for samples with xâ¯â¥â¯8â¯mol%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 124, August 2018, Pages 299-302
Journal: Measurement - Volume 124, August 2018, Pages 299-302
نویسندگان
Dariush Souri,