Scholarlink

<p>Uranium dioxide has been studied for 70&#xa0;years but still has some&#xa0;poorly&#xa0;understood properties. We present our last results using neutron total-scattering methods that evidence local deviations from average structure in UO<sub>2</sub> Pair-Distribution Function (PDF). At high temperature, this deviation appears as a decreasing of the UO distance with temperature, which we interpret as a phonon-induced dynamic distortion of uranium’s local environment. At low temperature, this deviation takes place in UO<sub>2</sub> magnetic order above the magnetic transition, which is still under study.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

What can studies of the pair-distribution functions (PDF) contribute to our knowledge about UO2?

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年5月19日

查看全文
  • Lionel Desgranges,
  • Henry E. Fischer,
  • Gerard H. Lander,
  • Gianguido Baldinozzi

摘要

Uranium dioxide has been studied for 70 years but still has some poorly understood properties. We present our last results using neutron total-scattering methods that evidence local deviations from average structure in UO2 Pair-Distribution Function (PDF). At high temperature, this deviation appears as a decreasing of the UO distance with temperature, which we interpret as a phonon-induced dynamic distortion of uranium’s local environment. At low temperature, this deviation takes place in UO2 magnetic order above the magnetic transition, which is still under study.

Graphical abstract