Ion irradiation-induced crystal structure changes in inverse spinel MgIn2O4. (December 2016)

• Record Type: Journal Article
• Authors: Tang, Ming; Valdez, James A.; Wang, Yongqiang; Zhang, Jian; Uberuaga, Blas P.; Sickafus, Kurt E.
• Is Part Of: Scripta materialia. Volume 125(2016)
• Page Start: 10
• Page End: 14
• Publication Date: 2016-12
• Subjects: Spinel -- Rocksalt phase -- MgIn2O4 -- Irradiation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.07.009
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: 400 keV Ne and 200 keV He ion irradiations were performed on fully inverse MgIn2 O4 samples at cryogenic temperature (~ 77 K), in order to examine the influence of radiation-induced cation disordering on crystal structure. In the case of MgIn2 O4 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. By contrast, for MgIn2 O4 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. Graphical abstract: