Open Questions on the Thermal Stability of Primary Electronic Centers in Irradiated MgO Single Crystals

IF 3.2 3区 化学 Q2 CHEMISTRY, PHYSICAL
A. Lushchik, A. Podelinska, V. Seeman, E. Shablonin, E. A. Kotomin* and V. N. Kuzovkov, 
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引用次数: 0

Abstract

Basic properties of the simplest radiation defect, the F+ center (an oxygen vacancy with a trapped electron), in the simplest oxide material (MgO with a cubic lattice structure) remain for a long time a subject of discussion, in light of highly contradictory literature data. In this paper, new data on the electron paramagnetic resonance (EPR) and optical absorption measurements for the neutron- and energetic-ion-irradiated (70 MeV Ar) MgO single crystals are discussed. Theoretical analysis of the diffusion-controlled F+ center isochronal annealing is performed; the obtained migration energies for oxygen interstitials are discussed in light of the available calculations on the mobility of both neutral and charged oxygen interstitials in metal oxides.

Abstract Image

辐照MgO单晶中初级电子中心热稳定性的开放性问题
在最简单的氧化物材料(立方晶格结构的MgO)中,最简单的辐射缺陷F+中心(一个带有捕获电子的氧空位)的基本性质,由于文献数据高度矛盾,长期以来一直是一个讨论的主题。本文讨论了中子和能量离子辐照(70 MeV Ar) MgO单晶的电子顺磁共振(EPR)和光吸收测量的新数据。对扩散控制的F+中心等时退火进行了理论分析;根据对金属氧化物中中性和带电氧间隙的迁移率的计算,讨论了得到的氧间隙的迁移能。
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来源期刊
The Journal of Physical Chemistry C
The Journal of Physical Chemistry C 化学-材料科学:综合
CiteScore
6.50
自引率
8.10%
发文量
2047
审稿时长
1.8 months
期刊介绍: The Journal of Physical Chemistry A/B/C is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and chemical physicists.
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