激光诱导的金镍纳米颗粒亚稳混合相：相干X射线衍射成像研究
Laser-induced metastable mixed phase of AuNi nanoparticles: a coherent X-ray diffraction imaging study.
作者信息
Kim Yoonhee, Kim Chan, Ahn Kangwoo, Choi Jungwon, Lee Su Yong, Kang Hyon Chol, Noh Do Young
机构信息
European X-ray Free Electron Laser Facility, Holzkoppel 4, 22869 Schenefeld, Germany.
Department of Physics and Photon Science and School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 61005 Gwangju, Korea.
出版信息
J Synchrotron Radiat. 2020 May 1;27(Pt 3):725-729. doi: 10.1107/S1600577520001617. Epub 2020 Mar 31.
The laser annealing process for AuNi nanoparticles has been visualized using coherent X-ray diffraction imaging (CXDI). AuNi bimetallic alloy nanoparticles, originally phase separated due to the miscibility gap, transform to metastable mixed alloy particles with rounded surface as they are irradiated by laser pulses. A three-dimensional CXDI shows that the internal part of the AuNi particles is in the mixed phase with preferred compositions at ∼29 at% of Au and ∼90 at% of Au.
利用相干X射线衍射成像（CXDI）对金镍纳米颗粒的激光退火过程进行了可视化研究。由于混溶间隙原本相分离的金镍双金属合金纳米颗粒，在受到激光脉冲照射时转变为具有圆形表面的亚稳态混合合金颗粒。三维CXDI显示，金镍颗粒的内部处于混合相，其中金的含量约为29原子%，金的含量约为90原子%时具有优先组成。
Zotero 插件