Laser-induced metastable mixed phase of AuNi nanoparticles: a coherent X-ray diffraction imaging study.,Journal of Synchrotron Radiation

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Laser-induced metastable mixed phase of AuNi nanoparticles: a coherent X-ray diffraction imaging study.
Journal of Synchrotron Radiation ( IF 2.4 ) Pub Date : 2020-03-31 , DOI: 10.1107/s1600577520001617
Yoonhee Kim ₁ , Chan Kim ₁ , Kangwoo Ahn ₂ , Jungwon Choi ₂ , Su Yong Lee ₃ , Hyon Chol Kang ₄ , Do Young Noh ₂

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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.

中文翻译：

激光诱导 AuNi 纳米粒子的亚稳态混合相：相干 X 射线衍射成像研究。

AuNi 纳米粒子的激光退火过程已使用相干 X 射线衍射成像 (CXDI) 进行可视化。AuNi双金属合金纳米颗粒最初由于混溶间隙而发生相分离，当受到激光脉冲照射时，它们转变为具有圆形表面的亚稳态混合合金颗粒。三维 CXDI 显示 AuNi 颗粒的内部处于混合相，优选成分为 ~29 at% Au 和 ~90 at% Au。

更新日期：2020-03-31

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