Title: Photorefractive effect in doped Pb₅Ge₃O₁₁ and in (Pb₁₋ₓ Baₓ)₅ Ge₃O₁₁
Authors: Yue, Xuefeng
Mendricks, S.
Hu, Yi
Hesse, H.
Kip, Detlef  
Language: en
Subject (DDC): DDC::500 Naturwissenschaften und Mathematik
Issue Date: Apr-1998
Document Type: Article
Journal / Series / Working Paper (HSU): Journal of applied physics : AIP's archival journal for significant new results in applied physics 
Volume: 83
Issue: 7
Page Start: 3473
Page End: 3479
Publisher Place: Melville, NY
Abstract: 
The photorefractive effect is studied in ferroelectric lead germanate crystals Pb₅Ge₃O₁₁, including undoped, Fe- and Rh-doped crystals, as well as (Pb₁-x Bax)₅ Ge₃O₁₁ solid solutions. Two kinds of processes are involved in photorefractive interactions: a fast response with a time constant generally less than 1 s and the formation of slow gratings with time constants of several hours for intensities in the range of 1-30 kW/m2. Basic photorefractive parameters corresponding to the fast response, such as dark- and photoconductivities, the sign of the main charges involved in the transport process, effective trap densities, and activation energies are determined. Compared to theoretical predictions the measured effects are too small which is attributed mainly to electron-hole competition. © 1998 American Institute of Physics.
Organization Units (connected with the publication): Universität Osnabrück
URL: https://api.elsevier.com/content/abstract/scopus_id/0000955501
ISSN: 00218979
DOI: 10.1063/1.366628
Appears in Collections:Publications of the HSU Researchers (before HSU)

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