EPR OF RADIATION-INDUCED DEFECTS IN FLUOROALUMINATE GLASSES

被引:18
作者
BOGOMOLOVA, LD
KRASILNIKOVA, NA
TRUL, OA
BOGDANOV, VL
KHALILEV, VD
PANFILOV, KV
CACCAVALE, F
机构
[1] ST PETERSBURG TECHNOL INST,ST PETERSBURG 198013,RUSSIA
[2] UNIV PADUA,DIPARTIMENTO FIS,CONSORZIO INFM,I-35131 PADUA,ITALY
关键词
D O I
10.1016/0022-3093(94)90318-2
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The electron paramagnetic resonance spectra of multicomponent fluoride glasses in the system AlF3-YF3-Sigma RF(2) (R = Ba, Ca, Sr, Mg) have been measured after gamma-ray irradiation at 77 K. The samples of nominal compositions Ba(2)EMgAl(2)F(14) (E = Sr, Ca, Pb) and BaYRMgAl(2)F(15) (R = Ba, Sr, Ca, Zn, Cd, Pb) were investigated in the same manner for comparison purposes. The hole center, F-2(-), has been identified in these materials. An electron center with g(parallel to) = 1.995 +/- 0.005 and g(perpendicular to) = 1.93 +/- 0.01 has been attributed to a Y2+ ion which can be considered as a Y3+ ion that has trapped an electron on its d-orbital. This center annealed out between 110 and 120 K. The symmetric single line with g = 2.015 +/- 0.002 and linewidths varing from 4.5 to 7.5 mT for different samples has been observed in a wide range of temperatures (from 77 to 520 K). It is assumed that this line is the superposition of two hole signals: one of them is a hole trapped on several fluorine ions and the other is a hole trapped on an oxygen impurity. The high oxygen content, which is confirmed by X-ray photoelectron spectroscopy measurements, leads to a broadening of the line attributed to oxygen impurity.
引用
收藏
页码:84 / 90
页数:7
相关论文
共 18 条
[1]  
ABRAGAM A, 1970, ELECT PARAMAGNETIC R, V1, pCH7
[2]   AN INVESTIGATION OF TRAPPED HOLES AND TRAPPED EXCITONS IN ALKALINE EARTH FLUORIDES [J].
BEAUMONT, JH ;
HAYES, W ;
KIRK, DL ;
SUMMERS, GP .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1970, 315 (1520) :69-+
[3]   EPR OF TRANSITION-METALS IN FLUOROALUMINATE GLASSES [J].
BOGOMOLOVA, LD ;
JACHKIN, VA ;
KRASILNIKOVA, NA ;
BOGDANOV, VL ;
FEDORUSHKOVA, EB ;
KHALILEV, VD .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1990, 125 (1-2) :32-39
[4]   ON THE RADIATION-DAMAGE OF FLUOROZIRCONATE GLASSES [J].
CASES, R ;
ALCALA, R ;
TRAN, DC .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1986, 87 (1-2) :93-102
[5]  
CASES R, 1985, J NONCRYST SOLIDS, V72
[6]   CHARACTERIZATION AND REACTIVITY OF MOLECULAR-OXYGEN SPECIES ON OXIDE SURFACES [J].
CHE, M ;
TENCH, AJ .
ADVANCES IN CATALYSIS, 1983, 32 :1-148
[7]   ELECTRON-PARAMAGNETIC-RES OF TRANSITION-METAL IONS (MN-2+,CU-2+,CR-3+,FE-3+) IN FLUOROALUMINATE GLASSES [J].
DANCE, JM ;
VIDEAU, JJ ;
PORTIER, J .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1986, 86 (1-2) :88-93
[8]   REDUCTION OF ABSORPTION LOSSES IN ZRF4-BASED IR FIBERS [J].
FRANCE, PW ;
CARTER, SF ;
MOORE, MW ;
WILLIAMS, JR .
ELECTRONICS LETTERS, 1985, 21 (14) :602-603
[9]   CHLORINE-ASSOCIATED DEFECT CENTERS IN IRRADIATED ZRF4 BASED GLASSES [J].
GRISCOM, DL ;
TRAN, DC .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1985, 72 (01) :159-163
[10]   ELECTRON-SPIN RESONANCE DETERMINATION OF THE REDOX STATE OF IRON AND ITS RELATIONSHIP TO RADIATION-INDUCED DEFECT CENTERS IN OXIDIZED AND REDUCED ZRF4-BASED GLASSES [J].
GRISCOM, DL ;
GINTHER, RJ .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1989, 113 (2-3) :146-160