Berben, D.Sturman, B.Freschi, A. A. [UNESP]Buse, K.2014-05-272014-05-272003-07-01Physical Review B - Condensed Matter and Materials Physics, v. 68, n. 3, p. 351201-351204, 2003.1098-0121http://hdl.handle.net/11449/67335Illumination of photorefractive, iron-doped lithium niobate crystals (LiNbO 3: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 Fe 2+ concentration can be explained by assuming that holes are the dominant charge carriers for this short-wavelength illumination.351201-351204engiron derivativelithiumniobiumoxygen derivativeconcentration (parameters)conductancecrystal structureholographyilluminationlight refractiontheoryX ray analysisArtigo10.1103/PhysRevB.68.035120WOS:000185229600057Acesso aberto2-s2.0-03456020152-s2.0-0345602015.pdf