Viscosity and density of BaB2O4, BaB2O4-NaF and BaB2O4-Na2O melts
文献类型：期刊论文
| 作者 | Hong, XG ; Lu, KQ ; Li, L ; Tang, DY |
| 刊名 | JOURNAL OF CRYSTAL GROWTH
 |
| 出版日期 | 1998 |
| 卷号 | 193期号:4页码:610 |
| 关键词 | SINGLE-CRYSTAL GROWTH CZOCHRALSKI METHOD BARIUM METABORATE TORSION PENDULUM BETA-BAB2O4 |
| ISSN号 | 0022-0248 |
| 通讯作者 | Hong, XG (reprint author), Univ Marburg, Inst Chem Phys, Hans Meerwein Str, D-35032 Marburg, Germany. |
| 中文摘要 | Using the double-wire torsion pendulum method, we have measured the viscosity of BaB2O4, BaB2O4-NaF and BaB2O4-Na2O melts, respectively, at high temperature of circa 910 degrees C up to 1150 degrees C in air ambient atmosphere. It was found that at the reported growth temperature (1050 degrees C), the viscosity of BaB2O4 was as high as 197.2 Pa s, and the addition rate of the logarithmic viscosity becomes bigger in the supercooling region than that of the normal melt. Both the activation energy and the volume of how unit are different around the growth temperature of beta-BaB2O4 crystal. With the addition of NaF or Na2O as flux to the BaB2O4 melt, both the viscosity and the activation energy of the melt decrease severely. Density of the melts with the fluxes was also determined, showing that similar obvious variations of density and its temperature dependence were observed. In terms of the Stokes-Einstein equation and the estimated volumes of the flow units in the melt, the role of NaF and Na2O fluxes on the BaB2O4 crystal growth was discussed. (C) 1998 Elsevier Science B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46543]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Hong, XG,Lu, KQ,Li, L,et al. Viscosity and density of BaB2O4, BaB2O4-NaF and BaB2O4-Na2O melts[J]. JOURNAL OF CRYSTAL GROWTH,1998,193(4):610. |
| APA | Hong, XG,Lu, KQ,Li, L,&Tang, DY.(1998).Viscosity and density of BaB2O4, BaB2O4-NaF and BaB2O4-Na2O melts.JOURNAL OF CRYSTAL GROWTH,193(4),610. |
| MLA | Hong, XG,et al."Viscosity and density of BaB2O4, BaB2O4-NaF and BaB2O4-Na2O melts".JOURNAL OF CRYSTAL GROWTH 193.4(1998):610. |
入库方式： OAI收割
来源：物理研究所
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