Ion irradiation-induced crystal structure changes in inverse spinel MgIn₂O₄

Journal Article · 29 July 2016 · Scripta Materialia

DOI: https://doi.org/10.1016/j.scriptamat.2016.07.009 · OSTI ID:1411341

Tang, Ming  ^[1]; Valdez, James A. ^[1]; Wang, Yongqiang  ^[1]; Zhang, Jian ^[2]; Uberuaga, Blas P.  ^[1]; Sickafus, Kurt E. ^[3]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Xiamen Univ., Fujian (China). College of Energy
3. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering

We performed 400 keV Ne and 200 keV He ion irradiations on fully inverse MgIn₂O₄ samples at cryogenic temperature (~ 77 K), in order to examine the influence of radiation-induced cation disordering on crystal structure. In the case of MgIn₂O₄ samples irradiated with Ne ions to a peak displacement damage dose of 4 displacements per atom (dpa), a spinel-to-rocksalt phase transformation was observed. Conversely, for MgIn₂O₄ samples irradiated with He ions to a peak displacement damage dose of 5 dpa, the only observed structural effect involved cation rearrangements from an inverse to a “random” spinel structure.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22); USDOE
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1411341
• Alternate ID(s): OSTI ID: 1359859
• Report Number(s): LA-UR-16-24112
• Journal Information: Scripta Materialia, Vol. 125, Issue C; ISSN 1359-6462
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English