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掺镁铌酸钾锂晶体的生长与介电特性 钟维烈1,张树君2,程振祥2,张沛霖1,陈焕矗2 (1.物理系,;2.山东大学晶体材料研究所) 摘要:首次用提拉法生长了K3Li2Nb5O15:Mg晶体,在10~700K的温度范围内,研究了该晶体的c,a方向片的介电温度特性,测量了频率在5×102~5×108Hz范围内介电常数的频率依赖关系.结果表明除了在623K附近有铁电-顺电相变以外,还在80K左右存在铁电-铁电相变,其介电弛豫频率约为250MHz左右. 关键词:掺杂; 相变; 介电性; [全文内容正在添加中] ......
LiNbO3晶体点缺陷形成能的经验途径计算 丁大同1,杨智1,李宝会1,金庆华1,冯少新1,郭振亚1 (1.南开大学物理系,天津,300071) 摘要:基于通过经验参数化方法确定的铌酸锂晶体内离子间互作用势参数,计算了该晶体中点缺陷的形成能,由此判断锂frenkel对是化学计量比铌酸锂晶体中的本征缺陷,锂空位模型为描述一致熔化组分铌酸锂晶体中点缺陷的主导类型. 关键词:铌酸锂; 电子壳层模型; 点缺陷形成能; 经验途径计算; [全文内容正在添加中] ......
lithium niobate single crystals[J]. Physical Chemistry Chemical Physics, 2013, 15(34): 14347-14356. [10] LIU D, LIU L, ZHOU C, REN L. Bleaching effect and nonvolatile holographic storage in doubly doped... gap in doped lithium niobate crystals[J]. Inorganic Materialsv, 2018,54(6): 581-584. [22] 王义杰, 代 丽, 徐朝鹏. Mg:Ce:Fe:LiNbO3晶体生长及其全息存储性能[J]. 硅酸盐学报, 2007, 35(2): 144-148. WANG Yi-jie, DAI Li, XU Zhao-peng......
Crystallization and dielectric properties of lead-free glass-ceramic composites with Gd2O3 additionZHOU Yi, ZHANG Qingmeng, LUO Jun, TANG Qun, and DU Jun Advanced Electronic Materials Institute, General Research Institute for Nonferrous Metals, Beijing 100088, China摘 要:Lead-free glass-ceramic composites in barium sodium niobate silica system with Gd2O3......
Trans. Nonferrous Met. Soc. China 22(2012) s138-s142 Fabrication and characteristics of strontium barium niobate/barium strontium titanate ceramics by powder-sol method SHAN Lian-wei, WANG Feng-chun...; accepted 14 August 2012 Abstract: Barium strontium titanate (Ba1-xSrxTiO3, BST) and strontium barium niobate (SrxBa1-xNb2O6, SBN) are important ferroelectric materials with excellent pyroelectric......
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Structural and mechanical properties of La1/3NbO3 and La1/3TaO3 thin films prepared by chemical solution depositionHelena Brunckova1,Lubomir Medvecky1,Alexandra Kovalcikova1,Martin Fides1,Erika Mudra1,Juraj Durisin1,Martin Sebek11. Institute of Materials Research, Slovak Academy of Sciences摘 要:In this work, properties of perovskite lanthanum niobate......
on transparent nanostructure.Just above the glass transition temperature T g in the KNS glass,an unidentified phase was formed,while in KNaNS and KLiNS,mixed-alkali niobate phases with tungsten bronze......
Structural and mechanical properties of La1/3NbO3 and La1/3TaO3 thin films prepared by chemical solution depositionHelena Brunckova1,Lubomir Medvecky1,Alexandra Kovalcikova1,Martin Fides1,Erika Mudra1,Juraj Durisin1,Martin Sebek11. Institute of Materials Research, Slovak Academy of Sciences摘 要:In this work, properties of perovskite lanthanum niobate......
Structural and electrical transport properties of a rare earth double perovskite oxide:Ba2ErNbO6Chandrahas Bharti33. Sensor and Actuator Division,CSIR-Central Glass and Ceramic Research Institute摘 要:The double perovskite oxide barium erbium niobate,Ba2ErNb......