...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review >High-precision equation of state data for TiO_2: A structural analog of SiO_2
【24h】

High-precision equation of state data for TiO_2: A structural analog of SiO_2

机译：TiO_2的状态数据的高精度方程：SiO_2的结构模拟

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The high-pressure response of titanium dioxide (TiO_2) is of interest because of its numerous industrial applications and its structural similarities to silica (SiO_2). We used three platforms-Sandia's Z machine. Omega Laser Facility, and density-functional theory-based quantum molecular dynamics (QMD) simulations-to study the equation of state (EOS) of TiO_2 at extreme conditions. We used magnetically accelerated flyer plates at Sandia to measure Hugoniot of TiO_2 up to pressures of 855 GPa. We used a laser-driven shock wave at Omega to measure the shock temperature in TiO_2. Our Z data show that rutile TiO_2 reaches 2.2-fold compression at a pressure of 855 GPa and Omega data show that TiO_2 is a reflecting liquid above 230 GPa. The QMD simulations are in excellent agreement with the experimental Hugoniot in both pressure and temperature. A melt curve for TiO_2 is also proposed based on the QMD simulations. The combined experimental results show TiO_2 is in a liquid at these explored pressure ranges and is not highly incompressible as suggested by a previous study.
机译：由于其许多工业应用及其与二氧化硅（SiO_2）的结构相似性，二氧化钛（TiO_2）的高压响应是感兴趣的。我们使用了三台平台 - 桑迪亚的Z机。欧米茄激光设施和密度功能理论的量子分子动力学（QMD）模拟 - 以极端条件研究TiO_2的状态（EOS）方程。我们在桑迪亚使用磁加速的传单板，以测量TiO_2的Hugoniot，直至855 GPa的压力。我们在Omega使用激光驱动的冲击波，测量TiO_2中的冲击温度。我们的Z数据显示，金红石TiO_2在855GPa和Omega数据的压力下达到2.2倍的压缩，并且TiO_2是230GPa以上的反射液。 QMD仿真与压力和温度的实验性Hugoniot非常一致。还提出了基于QMD模拟的TiO_2的熔融曲线。组合的实验结果显示TiO_2在这些探索的压力范围内处于液体中，并且如先前研究所提出的提出的那样不对压不可压缩。

著录项

  • 来源
    《Physical review》 |2020年第2期|024105.1-024105.10|共10页
  • 作者

    Sakun Duwal; Chad A. McCoy; Philippe F. Weck; Patricia Kalita; Healh L. Hanshaw; Kyle Cochrane; Tommy Ao; Seth Root;

  • 作者单位

    Satulia National Laboratories Albuquerque New Mexico 87125 USA;

    Satulia National Laboratories Albuquerque New Mexico 87125 USA;

    Satulia National Laboratories Albuquerque New Mexico 87125 USA;

    Satulia National Laboratories Albuquerque New Mexico 87125 USA;

    Satulia National Laboratories Albuquerque New Mexico 87125 USA;

    Satulia National Laboratories Albuquerque New Mexico 87125 USA;

    Satulia National Laboratories Albuquerque New Mexico 87125 USA;

    Satulia National Laboratories Albuquerque New Mexico 87125 USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号