TY - JOUR
T1 - New insights on P-related paramagnetic point defects in irradiated phosphate glasses
T2 - Impact of glass network type and irradiation dose
AU - Pukhkaya, V.
AU - Trompier, F.
AU - Ollier, N.
N1 - Publisher Copyright:
© 2014 AIP Publishing LLC.
PY - 2014/9/28
Y1 - 2014/9/28
N2 - P-related paramagnetic point defects were studied in irradiated Yb-doped phosphate glasses by electron paramagnetic resonance spectroscopy (X and Q-bands). A strong impact of the glass network type on the defect nature is shown. In all glasses, r-POHC defects formation is in strong correlation with Q2 tetrahedra amount supporting the structure of r-POHC. Ultra-phosphate glasses contain the larger defect type: Peroxy radicals, P1, P2, and P4 defects whose formation is linked to Q3 tetrahedra presence. In meta-phosphate and poly-phosphate glasses, peroxy radicals appear with r-POHC thermal recovery. In meta-phosphate glasses, a combination of P1 and P3 defects was evidenced for the first time, whereas in poly-phosphate glasses, only P3 defects were identified. Dose effect as well as defect recovery were analyzed.
AB - P-related paramagnetic point defects were studied in irradiated Yb-doped phosphate glasses by electron paramagnetic resonance spectroscopy (X and Q-bands). A strong impact of the glass network type on the defect nature is shown. In all glasses, r-POHC defects formation is in strong correlation with Q2 tetrahedra amount supporting the structure of r-POHC. Ultra-phosphate glasses contain the larger defect type: Peroxy radicals, P1, P2, and P4 defects whose formation is linked to Q3 tetrahedra presence. In meta-phosphate and poly-phosphate glasses, peroxy radicals appear with r-POHC thermal recovery. In meta-phosphate glasses, a combination of P1 and P3 defects was evidenced for the first time, whereas in poly-phosphate glasses, only P3 defects were identified. Dose effect as well as defect recovery were analyzed.
U2 - 10.1063/1.4896876
DO - 10.1063/1.4896876
M3 - Article
AN - SCOPUS:84907652108
SN - 0021-8979
VL - 116
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 12
M1 - 123517
ER -