Nanostructured Ag4O4 thin films produced by ion beam oxidation of silver

被引:12
|
作者
Dellasega, D. [1 ,2 ]
Casari, C. S. [1 ,2 ,4 ]
Vario, F. [1 ,2 ]
Conti, C. [3 ]
Bottani, C. E. [1 ,2 ,4 ]
Bassi, A. Li [1 ,2 ,4 ]
机构
[1] Politecn Milan, Dipartimento Energia, I-20133 Milan, Italy
[2] Politecn Milan, NEMAS Ctr NanoEngn Mat & Surfaces, I-20133 Milan, Italy
[3] CNR, Ist Conservaz & Valorizzaz Beni Culturali, Milan, Italy
[4] Ist Italiano Tecnol, Ctr Nano Sci & Technol Polimi, Milan, Italy
关键词
Thin films; Silver oxide; Tetragonal phase; Oxygen ions; TETRAGONAL SILVER(I; III); OXIDE; MAGNETIC-PROPERTIES; STABILITY;
D O I
10.1016/j.apsusc.2012.11.121
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report on the synthesis of nanostructured Ag4O4 by thermal evaporation of silver films followed by oxidation with beams of oxygen ions with different kinetic energy in the 50-300eV range. This method, which combines simplicity and versatility, allows to control the oxide structural properties, and in particular to obtain Ag4O4 thin films characterized by different nanoscale morphologies and crystalline structure, depending on the pristine silver layer morphology and on the energy of the oxygen ions. Monoclinic and tetragonal Ag4O4 phases, or a mixture of the two, can be obtained. The nanoscale porosity of the material makes it interesting for applications where surface mediated Ag ion release plays a crucial role. (c) 2012 Elsevier B.V. All rights reserved.
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页码:161 / 169
页数:9
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