The structural response of Dy₂TiO₅ oxide under swift heavy ion irradiation (2.2 GeV Au ions) was studied over a range of structural length scales utilizing neutron total scattering experiments. Refinement of diffraction data confirms that the long-range orthorhombic structure is susceptible to ion beam-induced amorphization with limited crystalline fraction remaining after irradiation to 8 × 10¹² ions/cm². In contrast, the local atomic arrangement, examined through pair distribution function analysis, shows only subtle changes after irradiation and is still described best by the original orthorhombic structural model. A comparison to Dy₂Ti₂O₇ pyrochlore oxide under the same irradiation conditions reveals a different behavior: while the dysprosium titanate pyrochlore is more radiation resistant over the long-range with smaller degree of amorphization as compared to Dy₂TiO₅, the former involves more local atomic rearrangements, best described by a pyrochlore-to-weberite-type transformation. These results highlight the importance of short-range and medium-range order analysis for a comprehensive description of radiation behavior.

利用中子全散射实验研究了Dy ₂ TiO ₅氧化物在快速重离子辐照下（2.2 GeV Au离子）在结构长度范围内的结构响应。衍射数据的细化证实，长距离正交晶体结构易于受到离子束诱导的非晶化作用，在辐照至8×10 ¹² 离子/ cm ²后仍保留有限的结晶度。相反，通过成对分布函数分析检查的局部原子排列，仅显示出辐照后的细微变化，并且仍然由原始的正交结构模型来最好地描述。与Dy ₂ Ti ₂ O _7的比较在相同照射条件下的烧绿石氧化物显示出不同的行为：尽管与Dy ₂ TiO ₅相比，钛酸dy烧绿石在长距离上具有更强的抗辐射性，且非晶化程度较小，但前者涉及更多的局部原子重排，最好用烧绿石转变为韦伯石型。这些结果突出了短程和中程分析对于辐射行为的全面描述的重要性。