The atomic structure of disordered ion tracks in magnesium aluminate spinel

Kazuhiro Yasuda; Tomokazu Yamamoto; Syo Matsumura

doi:10.1007/s11837-007-0050-3

The atomic structure of disordered ion tracks in magnesium aluminate spinel

Kazuhiro Yasuda, Tomokazu Yamamoto, Syo Matsumura

Research output: Contribution to journal › Article

6 Citations (Scopus)

Abstract

Atomic resolution transmission-electron microscopy (TEM) observations and analysis have been undertaken on magnesium aluminate spinel to understand the structure of ion tracks induced by swift heavy ions. A combination of TEM techniques, which includes high-resolution and bright-field (BF) imaging, and high angular resolution electron channeling spectroscopy (HARECXS) analysis, disclosed the atomic structure of ion tracks. Swift heavy ions induce cation disordering along the latent tracks for a widespread region of 10 nm in diameter, which is much larger than a strained region detected by BF diffraction contrast. A preferential migration of cations is induced from the tetrahedral to octahedral interstitial site at the core regions of ion tracks under a condition of higher electronic excitation of (dE/dx)_e = 35 keV/nm.

Original language	English
Pages (from-to)	27-30
Number of pages	4
Journal	JOM
Volume	59
Issue number	4
DOIs	https://doi.org/10.1007/s11837-007-0050-3
Publication status	Published - Apr 1 2007

All Science Journal Classification (ASJC) codes

Materials Science(all)
Engineering(all)

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Yasuda, K., Yamamoto, T., & Matsumura, S. (2007). The atomic structure of disordered ion tracks in magnesium aluminate spinel. JOM, 59(4), 27-30. https://doi.org/10.1007/s11837-007-0050-3

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