在[公式:见文本]-Fe[公式:见文本]O[公式:见文本]纳米棒中的辐射诱导的晶格放松
Ahmad M Khalil1,2, Saad Abdelaal3,4, A M Abdelhady3,4
1Physics Department, Faculty of Science, Benha University, Banha, Egypt.
Scientific reports
|September 27, 2023
概括
马辐射诱导氧化铁纳米棒的晶格放松,改变它们的形态. 本研究详细介绍了辐射对[公式:见文本]-Fe[公式:见文本]O[公式:见文本]纳米结构及其结构变化的影响.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 纳米技术纳米技术
背景情况:
- 氧化铁纳米结构是使用微波水热方法合成的.
- 纳米材料表现出独特的特性,受其结构和形态学的影响.
- 了解辐射对纳米材料的影响对于在恶劣环境中的应用至关重要.
研究的目的:
- 为了研究辐射诱导的晶格放松在[公式:见文本]-Fe[公式:见文本]O[公式:见文本]纳米棒.
- 为了将格子变化与粒子形态的变化相关联.
- 探索结构扭曲和格子放松之间的关系.
主要方法:
- [公式:见文本]-Fe[公式:见文本]O[公式:见文本]纳米棒的微波热水合成.
- 用高达1MGy的剂量对样品进行马辐射.
- 使用X射线粉末衍射,传输电子显微镜和电子偏磁共振 (EPR) 的分析.
主要成果:
- 马辐射导致了连续的格子压缩和膨胀,导致了格子放松.
- 纳米化物形态转化为布基球形状的颗粒随着辐射剂量的增加.
- EPR结果表明[公式:参见文本]-[公式:参见文本]八面体扭曲和格子放松之间的相关性.
结论:
- 辐射诱导的格子放松在[公式:见文本]-Fe[公式:见文本]O[公式:见文本]是一个可逆的过程.
- 形态变化与格子菌株直接相关.
- 在放松过程中,EPR光谱能提供有关原子层结构变化的见解.
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