Evaluation Of kinetic parameters Of Li2b4o7:Mn single crystal

被引：6

作者：

Ekdal, E. ^{[1
]}

Karali, T. ^{[1
]}

Kelemen, A. ^{[2
]}

Holovey, V. ^{[3
]}

Ignatovych, M. ^{[4
]}

机构：

[1] Ege Univ, Inst Nucl Sci, TR-35100 Izmir, Turkey

[2] Hungarian Acad Sci, Energy Res Ctr, H-1525 Budapest, Hungary

[3] NASU, Inst Elect Phys, UA-88000 Uzhgorod, Ukraine

[4] NASU, Inst Surface Chem, UA-03164 Kiev, Ukraine

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 588卷

关键词：

Li2B4O7:Mn; Single crystal; Kinetic parameters; Peak shape method; Initial rise method; Isothermal decay method; THERMALLY STIMULATED LUMINESCENCE; GLOW CURVES; DOPED LI2B4O7; LITHIUM TETRABORATE; THERMOLUMINESCENCE; CU; TL; PHOSPHOR; GROWTH; ORDER;

D O I：

10.1016/j.jallcom.2013.11.086

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The kinetic parameters of a newly developed Li2B4O7:Mn single crystal phosphor have been presented. Li2B4O7 single crystal doped with Mn were grown via the Czochralski method. Thermoluminescence (TL) glow curve of Li2B4O7:Mn single crystal exhibits two well separated TL peaks at about 363 and 478 K, later being more intense, with a heating rate of 1 K/s. The high-temperature glow curve at 478 K is important for dosimetric studies of Li2B4O7 (LBO) doped with Mn. The kinetic parameters (activation energy (E), frequency factor (s) and kinetic order (b)) of the main glow peak (478 K) have been calculated using initial rise (IR), isothermal decay (ID) and peak shape (PS) methods. Activation energies obtained by IR, ID and PS were found to be 1.24, 1.18 and 1.20 eV, respectively. Similarly, the frequency factors were determined using isothermal decay and peak shape methods and found as 7.85 x 10(11) and 3.27 x 10(11) s (1), respectively. All results obtained using these methods are compared and discussed. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：413 / 417

页数：5

共 32 条

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