中国物理B ›› 2017, Vol. 26 ›› Issue (10): 106102-106102.doi: 10.1088/1674-1056/26/10/106102

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Structural modification in swift heavy ion irradiated muscovite mica

Sheng-Xia Zhang(张胜霞), Jie Liu(刘杰), Jian Zeng(曾健), Pei-Pei Hu(胡培培), Peng-Fei Zhai(翟鹏飞)   

  1. 1. Institute of Modern Physics, Chinese Academy of Sciences(CAS), Lanzhou 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2017-06-12 修回日期:2017-07-03 出版日期:2017-10-05 发布日期:2017-10-05
  • 通讯作者: Sheng-Xia Zhang, Sheng-Xia Zhang E-mail:zhangsx@impcas.ac.cn;j.liu@impcas.ac.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11675233 and 11505243).

Structural modification in swift heavy ion irradiated muscovite mica

Sheng-Xia Zhang(张胜霞)1, Jie Liu(刘杰)1, Jian Zeng(曾健)1, Pei-Pei Hu(胡培培)2, Peng-Fei Zhai(翟鹏飞)1   

  1. 1. Institute of Modern Physics, Chinese Academy of Sciences(CAS), Lanzhou 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-06-12 Revised:2017-07-03 Online:2017-10-05 Published:2017-10-05
  • Contact: Sheng-Xia Zhang, Sheng-Xia Zhang E-mail:zhangsx@impcas.ac.cn;j.liu@impcas.ac.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11675233 and 11505243).

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摘要：

Two-layer monoclinic (2M) muscovite mica sheets with a thickness of 12 μm are irradiated with Sn ions at room temperature with electronic energy loss (dE/dx)e of 14.7 keV/nm. The ion fluence is varied between 1×1011 and 1×1013 ions/cm2. Structural transition in irradiated mica is investigated by x-ray diffraction (XRD). The main diffraction peaks shift to the high angles, and the inter-planar distance decreases due to swift heavy ion (SHI) irradiation. Dehydration takes place in mica during SHI irradiation and mica with one-layer monoclinic (1M) structure is thought to be generated in 2M mica after SHI irradiation. In addition, micro stress and damage cross section in irradiated mica are analyzed according to XRD data. High resolution transmission electron microscopy (HRTEM) is used on the irradiated mica to obtain the detailed information about the latent tracks and structural modifications directly. The latent track in mica presents an amorphous zone surrounded by strain contrast shell, which is associated with the residual stress in irradiated mica.

关键词: muscovite mica, swift heavy ion irradiation, latent track, polymorph transition

Abstract:

Two-layer monoclinic (2M) muscovite mica sheets with a thickness of 12 μm are irradiated with Sn ions at room temperature with electronic energy loss (dE/dx)e of 14.7 keV/nm. The ion fluence is varied between 1×1011 and 1×1013 ions/cm2. Structural transition in irradiated mica is investigated by x-ray diffraction (XRD). The main diffraction peaks shift to the high angles, and the inter-planar distance decreases due to swift heavy ion (SHI) irradiation. Dehydration takes place in mica during SHI irradiation and mica with one-layer monoclinic (1M) structure is thought to be generated in 2M mica after SHI irradiation. In addition, micro stress and damage cross section in irradiated mica are analyzed according to XRD data. High resolution transmission electron microscopy (HRTEM) is used on the irradiated mica to obtain the detailed information about the latent tracks and structural modifications directly. The latent track in mica presents an amorphous zone surrounded by strain contrast shell, which is associated with the residual stress in irradiated mica.

Key words: muscovite mica, swift heavy ion irradiation, latent track, polymorph transition

中图分类号:  (Radiation effects on specific materials)

  • 61.82.-d
61.80.-x (Physical radiation effects, radiation damage)