Study of the thermally processed lanthanum hexaboride surface

被引:0
作者
A. S. Igityan
Y. A. Kafadaryan
N. R. Aghamalyan
S. I. Petrosyan
G. R. Badalyan
I. A. Gambaryan
R. K. Hovsepyan
H. S. Semerjian
机构
[1] NAS RA,Institute for Physical Research
[2] Yerevan State University,undefined
来源
Journal of Contemporary Physics (Armenian Academy of Sciences) | 2014年 / 49卷
关键词
oxide and hexaboride of lanthanum; electrical conductance mechanism;
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学科分类号
摘要
We study the possibility to grow lanthanum oxide (La2O3) on the surface of lanthanum hexaboride (LaB6) with (100)- and (100/110)-orientation in conditions of thermal annealing, in order to produce a metal-oxide-metal structure. Electron microscopic images, X-ray and optical spectra revealed a La2O3 layer of cubic symmetry. The features of the current-voltage and capacitance-voltage characteristics of the Al/La2O3/(100)LaB6 and Al/La2O3/(100/110)LaB6 structures are analyzed. The electrical conductance mechanism is explained on the basis of space-charge limited current.
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页码:277 / 285
页数:8
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