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INTERDIFFUSION IN LOW TEMPERATURE ANNEALED CoN/CN SOFT X-RAY MULTILAYER MIRRORS |
BAI Haili; JIANG Enyong (Department of Applied Physics; Tianjin University; Tianjin 300072) |
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Cite this article:
BAI Haili; JIANG Enyong (Department of Applied Physics; Tianjin University; Tianjin 300072). INTERDIFFUSION IN LOW TEMPERATURE ANNEALED CoN/CN SOFT X-RAY MULTILAYER MIRRORS. Acta Metall Sin, 1998, 34(4): 406-411.
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Abstract The interdiffusion in the amorphous CoN/CN soft X-ray multilayer is investigated quantitatively by monitoring the enhancement of the first order modulation peak onannealing in the temperature range of 473-523 K. The effective interdiffusion coefficient measured is as low as 10-25m2s-1. The comparison with the results of Co/C system indicates that the following three features are noticeable: (1) the critical wavelengths of interdiffusion obtained are 2.00-2.04 nm at temperatures ranging from 473 to 523 K and equal to those of Co/C multilayers within the experimental error, indicating that the interdiffosion behaviour in the CoN/CNmultilayers still depends on the thermodynamic properties of the Co--C system, (2) the effectiveinterdffesivities and macroscopic diffusion coefficiellts are lower, and (3) the activation energy ofdiction is higher. The results imply that it is possible to improve the thermal stability of Co/Cmultilayer by doping with nitrogen.
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Received: 18 April 1998
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