Thermal decomposition of a thin AgO[sub x] layer generating optical near-field

Kolobov, A. V.; Rogalev, A.; Wilhelm, F.; Jaouen, N.; Shima, T.; Tominaga, J.
March 2004
Applied Physics Letters;3/8/2004, Vol. 84 Issue 10, p1641
Academic Journal
Thermal decomposition of AgO[sub x] thin layers generating optical near field have been studied by Ag L[sub III] edge x-ray absorption near-edge structure. We found that, different from previous assumptions, the starting layer is a mixture of AgO (∼40%) and Ag[sub 2]O (∼60%). We further observed that thermal decomposition starts at a temperature as low as 50 °C. The decomposition process exhibits three stages and the oxide layer at intermediate stages consists of a mixture of AgO, Ag[sub 2]O, and metallic Ag with different fractions of each phase. Activation energies of the decomposition of the thin oxide layer have been determined for different decomposition stages, the obtained values being different from that for powder oxides. © 2004 American Institute of Physics.


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