Observations on the melting of Au nanoparticle deposits and alloying with Ni via in situ synchrotron radiation x-ray diffraction

Tzu Hsuan Kao, Jenn Ming Song, In Gann Chen, Teng Yuan Dong, Weng Sing Hwang, Hsin Yi Lee

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7 Citations (Scopus)

Abstract

Through monitoring the evolution of the x-ray diffraction peaks, the transient low temperature melting of Au nanoparticles and following alloying with the substrate were demonstrated via in situ synchrotron radiation x-ray diffraction. Upon heating, the broad diffraction peak of nanosized Au particles with the average diameter of 2.5 nm was suppressed at about 200 °C and soon became sharp due to melting and subsequent solidification. If the test was conducted on a Ni film, an unstable intermetallic compound Au3 Ni appeared with crystallized Au, which resulted from the reaction between the supercooled liquid of Au and Ni. However, it decomposed at 275 °C and above.

Original languageEnglish
Article number131905
JournalApplied Physics Letters
Volume95
Issue number13
DOIs
Publication statusPublished - 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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