Color center formation in sapphire by swift heavy ion irradiation

被引：28
作者：
Mohanty, T [1 ]
Mishrab, NC
Singh, F
Bhat, SV
Kanjilal, D
机构：
[1] Aruna Asaf Ali Marg, Ctr Nucl Sci, New Delhi 110067, India
[2] Utkal Univ, Dept Phys, Bhubaneswar 751004, Orissa, India
[3] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India
来源：
RADIATION MEASUREMENTS | 2003年 / 36卷 / 1-6期
关键词：
sapphire; irradiation; color center; luminescence; absorption;
D O I：
10.1016/S1350-4487(03)00234-8
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Single crystals of sapphire (alpha-Al2O3) were irradiated at room temperature with 100 and 190 MeV silver (Ag) ions from the 15 UD Pelletron at the Nuclear Science Centre, New Delhi. The pristine as well as irradiated sapphires are characterized by photoluminescence at room temperature under 2.8 eV blue excitation by a He-Cd laser, ultraviolet (UV)-Visible absorption and electron paramagnetic resonance (EPR). Photoluminescence studies show a peak at 2.2 eV, due to formation of a F-2(2+), center. The intensity of this peak increases with fluence. A sudden increase in peak intensity has been observed after 5 x 10(12) ions/cm(2) where the defect zones started overlapping due to multiple ion impact. UV Visible and EPR studies show formation of defects like F and F+ centers. (C) 2003 Elsevier Ltd. All rights reserved.
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页码：723 / 727
页数：5
相关论文
共 19 条
[11]   Study of new surface structures created on sapphire by Co ion implantation [J].
Marques, C ;
Cruz, MM ;
da Silva, RC ;
Alves, E .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2001, 175 :500-504
[12]   Optical and electrical phenomena in dielectric materials under irradiation [J].
Plaksin, OA ;
Stepanov, VA ;
Stepanov, PA ;
Demenkov, PV ;
Chernov, VM ;
Krutskikh, AO .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2002, 193 :265-270
[13]   Damage creation in α-Al2O3 by MeV fullerene impacts [J].
Ramos, SMM ;
Bonardi, N ;
Canut, B ;
Bouffard, S ;
Della-Negra, S .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1998, 143 (03) :319-332
[14]   Damage accumulation in Al2O3 during H2+ or He+ ion irradiation [J].
Sasajima, N ;
Matsui, T ;
Furuno, S ;
Hojou, K ;
Otsu, H .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1999, 148 (1-4) :745-751
[15]   Luminescence of LiF and α-Al2O3 crystals under high density excitation [J].
Skuratov, VA .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1998, 146 (1-4) :385-392
[16]  
SKURATOV VA, 1996, NUCL INSTRUM METH B, DOI UNSP 107263
[17]   Electron excitation relaxation in wide-gap single crystal insulators under swift heavy-ion irradiation [J].
Yavlinskii, YN .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2000, 166 :35-39
[18]  
Zeigler J.F., 1985, Stopping and Range of Ions in Solids
[19]  
ZINKLE SJ, 1995, MATER RES SOC SYMP P, V373, P287
12