کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1810646 | 1025567 | 2012 | 4 صفحه PDF | دانلود رایگان |
A thermodynamic model of self-assembling of isoelectronic impurities in ZnS:(Cd, O) is presented. Self-assembling results in an occurrence of 1O4Cd tetrahedral clusters. The self-assembling conditions are derived by the minimum condition of the free energy of ZnS:(Cd, O) for Cd and oxygen in the dilute and ultra dilute limits, respectively. The occurrence of 1O4Cd clusters and the completion of self-assembling when all oxygen atoms are in clusters are results of the continuous phase transitions. The temperature of a self-assembling occurrence does not depend on oxygen content and is a function of Cd concentration. The fulfilled estimates show that at temperature of 300 °C all oxygen atoms should be in 1O4Cd clusters if Cd content is insignificantly larger than 1%.
Journal: Physica B: Condensed Matter - Volume 407, Issue 15, 1 August 2012, Pages 2846–2849