1404/04/24
داریوش سوری

داریوش سوری

مرتبه علمی: استاد
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: دانشکده علوم پایه
نشانی:
تلفن:

مشخصات پژوهش

عنوان
Small polaron hopping conduction in tellurium based glasses containing vanadium and antimony
نوع پژوهش
JournalPaper
کلیدواژه‌ها
Keywords: Small polaron hopping (SPH); Oxide glasses; Activation energy; Tunneling factor
سال
2010
مجله JOURNAL OF NON-CRYSTALLINE SOLIDS
شناسه DOI
پژوهشگران Dariush Souri

چکیده

The dc electrical conductivity of semiconducting oxide glasses in the (60−x)V2O5–40TeO2–xSb2O3 system with 0≤x≤10,prepared by press quenching method, was studied at temperatures between 305 and 472 K. For the present glasses, the dc conductivities at 334 K were 2.67×10−6 –4.35×10−5 Scm−1 , indicating that the conductivity increased with increasing V2O5 concentration. From the conductivity–temperature relation, it was found that the small polaron hopping (SPH) mechanism was applicable at the present temperatures, and the electrical conduction was due to non-adiabatic SPH of electrons between vanadium ions. For glasses with 5≤x≤10, the value of tunneling factor (α) was found to be 2.67×108 cm−1 .