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 | |
| Publication status | Published - Apr 1 2007 |
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All Science Journal Classification (ASJC) codes
- Geochemistry and Petrology
- Geotechnical Engineering and Engineering Geology
- Materials Science(all)
- Metals and Alloys
Cite this
The atomic structure of disordered ion tracks in magnesium aluminate spinel. / Yasuda, Kazuhiro; Yamamoto, Tomokazu; Matsumura, Syo.
In: JOM, Vol. 59, No. 4, 01.04.2007, p. 27-30.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The atomic structure of disordered ion tracks in magnesium aluminate spinel
AU - Yasuda, Kazuhiro
AU - Yamamoto, Tomokazu
AU - Matsumura, Syo
PY - 2007/4/1
Y1 - 2007/4/1
N2 - 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.
AB - 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.
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U2 - 10.1007/s11837-007-0050-3
DO - 10.1007/s11837-007-0050-3
M3 - Article
AN - SCOPUS:34548151821
VL - 59
SP - 27
EP - 30
JO - JOM
JF - JOM
SN - 1047-4838
IS - 4
ER -