کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1618996 1005715 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dependence of activation energy and pre-exponential factor on electric field in amorphous thin films of Se70Te30−xZnx
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Dependence of activation energy and pre-exponential factor on electric field in amorphous thin films of Se70Te30−xZnx
چکیده انگلیسی

The present paper reports the effect of electric field on the electrical parameters (activation energy and pre-exponential factor) in amorphous thin films of Se70Te30−xZnx (x = 0, 6, 8). It is observed that, in a particular composition, at low electric field up to 103 V/cm neither activation energy nor pre-exponential factor depend on electric field as expected in case of ohmic region. However, at higher electric fields where non ohmic region is observed, activation energy and pre-exponential factor both vary with electric field. Similar behavior is observed in all the compositions used in this study. A correlation between activation energy and pre-exponential factor is also observed in these alloys, which is known as Meyer–Neldel rule (MN rule). Further MN rule is also observed in the present case which is explained by the model suggested by Yelon and Movaghar responsible for MN rule in chalcogenide glasses.

Research highlights▶ In the present paper we have demonstrated further MN rule.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 509, Issue 1, 5 January 2011, Pages 6–9
نویسندگان
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