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优质DKDP晶体的点状籽晶生长及其表征研究 总被引:1,自引:1,他引:0
本文在研究DKDP溶液稳定性的基础上,采用Z切点状籽晶(5mm×5mm×3mm)生长了多块DKDP晶体,在250ml和1000ml生长瓶中分别获得了在[100]和[001]向生长速度可达到3mm/d和4.5 mm/d的点状籽晶生长优质DKDP晶体的生长条件.通过等离子体发射光谱(ICP)和紫外可见光谱分析发现DKDP晶体柱面的金属离子含量比锥面高,柱面的紫外可见吸收比锥面大.性能测试结果表明,点状籽晶全方位生长的DKDP晶体的激光损伤阈值约为5GW/cm2、半波电压约为4kV、动态消光比约为1600∶1,发现与传统方法生长晶体的性能没有明显的差别. 相似文献
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金属有机配合物-硫脲硫酸锌晶体的生长探索 总被引:1,自引:1,他引:0
采用水溶液法生长了多块厘米级金属有机配合物ZTS晶体,其中最大尺寸者达1.5cn×3.2cm×3.0cm.所得晶体无色透明,外形较完整,由10个单形、共22个晶面组成,在大气中能够长期稳定存在.该晶体在水中溶解度和溶解度温度系数都较小,在水溶液中生长其晶体以降温和蒸发相结合的方法为宜.采用X射线单晶衍射法验证了所生长的晶体.测定了该晶体的红外光谱,发现该晶体在红外光区400~4000 cm-1范围内有较多强吸收带. 相似文献
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A new pentaborate, KNa_2CdB_5O_(10), has been synthesized and its crystal structure was determined by single-crystal XRD method with the following crystal data: KNa_2CdB_5O_(10), Pccn, a = 18.4555(13), b = 8.3040(10), c = 12.8772(9) ?, V = 1973.5(3) ?~3, Z = 8, Mr = 411.53, D_c= 2.770 g/cm~3, μ = 2.765 mm~(-1), F(000) = 1552, R = 0.0648 and w R = 0.1756 for 1684 observed reflections and 175 variables. It contains the double ring [B_5O_(10)]~(5-) groups composed of one BO_4 tetrahedron and four BO_3 triangles that are bridged by tetrahedral Cd~(2+) centers via common O atoms to form 2D [CdB_5O_(10)]_n~(3n-) layers, with A+(A = K/Na, Na) cations situated between and within the layers. IR spectrum confirms the existence of BO_3 and BO_4 groups. UV-VIS diffuse reflectance spectrum shows a band gap of about 3.44 eV and solid-state fluorescence spectrum exhibits a broad emission band at around 386 nm. Band structure calculations indicate that KNa_2CdB_5O_(10) is an indirect band-gap insulator, with the calculated energy gap(3.68 eV) close to the experimental one. 相似文献
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