期刊
SOLID STATE COMMUNICATIONS
卷 122, 期 10, 页码 537-541出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0038-1098(02)00180-1
关键词
ferroelectrics; point defects; dielectric response; optical properties
Relationship between the dielectric constant and corresponding defect concentration of lithium niobate crystals is studied. An ion polarizability additivity rule of dielectric constants of complex substances and the Li-site vacancy model are employed in the present work. The obtained linear correlation between the dielectric constant and corresponding defect concentration of lithium niobate crystals presents a novel method to quantitatively characterize the optical quality of the obtained single crystals. The working formula and curve for lithium niobate crystal samples give us a quantitative scale to characterize the defect concentration of the obtained lithium niobate single crystals. (C) 2002 Elsevier Science Ltd. All rights reserved.
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