Effect of electron bombardment on a phase-inhomogeneous nanoscopic structure and the fundamental absorption spectrum of single-crystal CuO

被引:5
|
作者
Sukhorukov, YP [1 ]
Loshkareva, NN [1 ]
Moskvin, AS [1 ]
Arbuzov, VL [1 ]
Ovchinnikov, AS [1 ]
Chebotaev, NM [1 ]
Samokhvalov, AA [1 ]
机构
[1] Ural State Univ, Ekaterinburg 620083, Russia
关键词
D O I
10.1134/1.1130199
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The optical absorption spectra of single-crystal CuO bombarded with 5-MeV electrons exhibit reduced absorption in the region of the fundamental absorption edge at 17 eV, which corresponds to the b(1g)-->e(kappa) transition with charge transfer in CuO46-. A simultaneous increase in absorption is observed in the middle infrared and in the region of high energies centered on 2.9 eV. The experimental results obtained are interpreted in terms of ideas on the phase-inhomogeneous nano-agglomorated structure in copper oxides that occurs as a result of the nucleation of polar centers (CuO45-, CuO47-) under electron bombardment. (C) 1997 American Institute of Physics.
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页码:1916 / 1920
页数:5
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