کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1811937 | 1025604 | 2011 | 6 صفحه PDF | دانلود رایگان |

Crystallization and glass transition kinetics of Se70−xGa30Inx (x=5, 10, 15, and 20) semiconducting chalcogenide glasses were studied under non-isothermal condition using a Differential Scanning Calorimeter (DSC). DSC thermograms of the samples were recorded at four different heating rates 5, 10, 15, and 20 K/min. The variation of the glass transition temperature (Tg) with the heating rate (β) was used to calculate the glass transition activation energy (Et) using two different models. Meanwhile, the variation of the peak temperature of crystallization (Tp) with β was utilized to deduce the crystallization activation energy (Ec) using Kissinger, Augis–Bennet, and Takhor models. Results reveal that Et decreases with increasing In content, while both Tg and Ec exhibit the opposite behavior, and the crystal growth occurs in one dimension. The variation of these thermal parameters with the average coordination number
Research highlights
► Addition of In to Se–Ga glass decreases the glass transition activation energy.
► The crystallization rate in Se–Ga–In glass is reduced as In content increases.
► The crystal growth in Se–Ga–In glass occurs in one dimension.
► Thermal properties of Se–Ga–In glass indicate a shift in Phillips–Thorpe threshold.
Journal: Physica B: Condensed Matter - Volume 406, Issue 3, 1 February 2011, Pages 482–487