标题:Growth and characterization of congruent lithium isotope niobate (7~LiNbO_3)single crystal
作者:N.N. Zhang;J.Y. Wang;S.H. Yao;X.B. Hu;HJ. Zhang;A.P. Ayala;I. Guedes
通讯作者:Wang, J Y
作者机构:[Zhang, N.N] State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China, Departamento de Física, Universidade Federal Do Cear 更多
会议名称:16th International Conference on Crystal Growth (ICCG16)/14th International Conference on Vapor Growth and Epitaxy (ICVGE14)
会议日期:AUG 08-13, 2010
来源:Journal of Crystal Growth
出版年:2011
卷:318
期:1
页码:645-648
DOI:10.1016/j.jcrysgro.2010.11.006
关键词:A1. Characterization;A1. Neutron scattering;A2. Czochralski method;A2. Single crystal growth;B1. Isotopic substitution;B1. Lithium niobate
摘要:For further investigation on the defect structure of lithium niobate (IiNbO_3-hereafter LN) crystals using the neutron scattering technique, a congruent lithium isotope niobate (C~7LN) crystal was grown by the Czochralski method from a 48.4% 7~Li melt. The X-ray powder diffraction (XRPD) results show that the as-grown crystal is a single-phased (R3c) LN. We observed 4Ai(TO)+7E(TO) Raman modes. The crystal composition (Li mol%) determined from UV absorption edge and Raman measurements is 47.47% and 47.34%, respectively. The specific heat (C_p), thermal diffusion coefficients (λ_a,λ_c), thermal conductivities (K_a, k)c) and the average thermal expansion coefficients (α_a, α_c) were determined. The effect of Li vacancy content is analyzed by comparing the results with those obtained for stoichiometric lithium isotope niobate (S~7LN) and congruent natural lithium niobate (CLN) crystals. The values of all thermal parameters of C~7LN are smaller than those of S~7LN and CLN, which may be related to either the difference of vacancy content or isotope substitution.
收录类别:CPCI-S;EI;SCOPUS;SCIE
WOS核心被引频次:1
Scopus被引频次:3
资源类型:会议论文;期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952738889&doi=10.1016%2fj.jcrysgro.2010.11.006&partnerID=40&md5=c699ca83d7e191394dc2e9ac11bc8558
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