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 language | English |
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Article number | 131905 |
Journal | Applied Physics Letters |
Volume | 95 |
Issue number | 13 |
DOIs | |
Publication status | Published - 2009 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)