Evolution of structural defects in milled Cd0.3Zn0.7 Se powder studied by electron spin spectroscopy
Ibrahim Bagudo Muh'd, Zainal A. Talib, Arash Akbari-Sharbaf
Results in Physics · 2017
doi:10.1016/j.rinp.2017.05.023 (opens in a new tab)
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Abstract
Mechanically induced defect in high energy milled Cd0.3Zn0.7Se nanocrystals was investigated using electron spin resonance (ESR). The broad ESR component with g ∼ 2 was attributed to paramagnetic defects present in the milled powder. The spin density of the center increases linearly from ∼1 × 1020 spins/g to 7 × 1020 spins/g with milling time. The most probable induced centers during mechanical milling were (VZn–Zni), VZn. The best simulations were produced for relative spin concentrations of three paramagnetic defects with ratio 3:6:10 for 5 h and 10 h milled samples. Keywords: Defects, Impurities, Point defects, Electron spin resonance, Nanomaterials
Abstract licence: CC BY-NC
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