...
首页> 外文期刊>Physica, E. Low-dimensional systems & nanostructures >Fabrication of Ag nanoclusters in single-crystal MgO by high-energy ion implantation
【24h】

Fabrication of Ag nanoclusters in single-crystal MgO by high-energy ion implantation

机译:高能离子注入法在单晶MgO中制备Ag纳米团簇

获取原文
获取原文并翻译 | 示例
           

摘要

Ag nanoclusters are created in single-crystal MgO by ion implantation of 2 x 10(17) Ag ionS/cm(2) at an energy of 200 keV and subsequent thermal annealing. The defect evolution is investigated by means of optical absorption spectroscopy. Optical absorption spectra show an absorption peak around 460 nm which belonged to the surface plasmon resonance absorption of Ag clusters in as-implanted and annealed samples in reducing atmosphere. With the increase in annealing temperature, the optical absorption peaks blueshift at lower temperature, then redshift for temperature higher than 600 degrees C and return to position after annealing at 900 degrees C. A new absorption peak belonging to F-n center is observed after annealing at 700 degrees C. Transmission electron microscopy (TEM) study indicates that the surface of MgO is amorphized and the ion-implanted layer is partly damaged; the damaged layer is recovered by annealing in reducing atmosphere at 900 degrees C. (C) 2007 Elsevier B.V. All rights reserved.
机译:通过以200 keV的能量离子注入2 x 10(17)Ag ionS / cm(2)并随后进行热退火,在单晶MgO中创建Ag纳米团簇。通过光学吸收光谱法研究缺陷的发展。光吸收光谱显示在460nm附近的吸收峰,该峰属于在还原气氛中的经植入和退火的样品中的Ag团簇的表面等离子体激元共振吸收。随着退火温度的升高,在较低温度下光吸收峰发生蓝移,在温度高于600℃时发生红移,并在900℃退火后返回原位。在700℃退火后观察到一个新的吸收峰,属于Fn中心透射电子显微镜(TEM)研究表明,MgO的表面非晶化,并且离子注入层被部分破坏。通过在还原性气氛中在900摄氏度下进行退火来恢复受损层。(C)2007 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号