Effects of Au2+ irradiation induced damage in a high-entropy pyrochlore oxide single crystal
Effects of Au2+ irradiation induced damage in a high-entropy pyrochlore oxide single crystal
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DOI：
10.1016/j.scriptamat.2022.114916
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发表时间：
2022-07-16
影响因子：
6
通讯作者：
Keppens, Veerle
中科院分区：
文献类型：
--
作者：
Kinsler-Fedon, Candice;Nuckols, Lauren;Keppens, Veerle
我们报告了一个组成复杂的（高熵）烧绿石氧化物的离子辐照研究。利用沟道模式卢瑟福背散射谱（RBS/C）研究了室温下4 MeV Au ~（2+）离子辐照[100]取向沿着（Yb_（0.2）Tm_（0.2）Lu_（0.2）Ho_（0.2）Er_（0.2））Ti_2 O_7单晶所产生的损伤。RBS/C的基础上的损伤配置文件，并比较单组分烧绿石钛酸盐氧化物，以评估相对电阻辐照诱导的非晶化。结果表明，这种高熵烧绿石在0.13 dpa的剂量下变成无定形，这与以前研究的单组分烧绿石相当。透射电子显微镜图像揭示了受损的表面层，这与RBS/C的结果是一致的。
We report an ion-irradiation study of a compositionally complex (high-entropy) pyrochlore oxide. The damage produced from 4 MeV Au2+ ion irradiation on single crystal(Yb0.2Tm0.2Lu0.2Ho0.2Er0.2)(2)Ti2O7 aligned along the [100] direction is investigated at room temperature by Rutherford backscattering spectrometry in channeling mode (RBS/C). Damage profiles based on RBS/C are presented and compared to single-component pyrochlore titanate oxides to evaluate the relative resistance to irradiation-induced amorphization. The results show that this high-entropy pyrochlore goes amorphous at a dose of 0.13 dpa, which is comparable to that of single-component pyrochlores previously studied. Transmission electron microscopy images unveil the damaged surface layer, which is consistent with the RBS/C results.