X-ray-induced conductivity in iron-doped lithium niobate crystals
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American Physical Society (APS)
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Abstract
Illumination of photorefractive, iron-doped lithium niobate crystals (LiNbO3:Fe) with x-rays generates a conductivity that we determine from the speed of hologram erasure. The doping levels of the crystals and the acceleration voltage of our x-ray tube are varied. A theoretical model is presented, which describes the obtained results. A decrease of the conductivity with increasing Fe2+ concentration can be explained by assuming that holes are the dominant charge carriers for this short-wavelength illumination. © 2003 The American Physical Society.
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English
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Physical Review B - Condensed Matter and Materials Physics, v. 68, n. 11, 2003.
