Low temperature thermoluminescence of Gd2O3 nanoparticles using various heating rate and Tmax???Texc. methods
Yükleniyor...
Dosyalar
Tarih
2019
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier B.V.
Erişim Hakkı
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
Özet
Thermoluminescence (TL) measurements for Gd 2 O 3 nanoparticles were carried out for various heating rates between 0.3 and 0.8 K/s at low temperatures (10–280 K). TL spectrum exhibited two observable and one faint peaks in the temperature region of 10–100 K, and four peaks in the temperature region of 160–280 K. Heating rate analysis was achieved to understand the behaviors of trap levels. It was seen that the peak maximum temperatures and TL intensities of all peaks increase with increasing heating rate. This behavior was ascribed to anomalous heating rate effect. T max ? T exc. analysis was accomplished for TL peaks at relatively higher temperature region to reveal the related traps depths. T max ? T exc. plot presented a staircase structure indicating that the TL glow curve is composed of well separated glow peaks. Mean activation energies of trapping centers corresponding to these separated peaks were found as 0.43, 0.50, 0.58 and 0.80 eV. © 2019
Açıklama
Anahtar Kelimeler
Defects, Gd2O3, Lanthanide Oxides, Thermoluminescence
Kaynak
Results in Physics
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
12
Sayı
Künye
Delice, S., Işık, M., Gasanly, N. M. (2019). Low temperature thermoluminescence of Gd2O3 nanoparticles using various heating rate and Tmax? Texc. methods. Results in Physics, 12, 1809-1813.
