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We have investigated the magnetic properties of Cd atoms decayed from 111 In at the interfaces of Fe/Ag evaporated films. In order to determine the magnetic properties of the films, we have measured 111 Cd( 111 In) time differential perturbed angular correlation (TDPAC) spectra at room temperature as a function of distance from the interface. Fe and Ag were evaporated using electron beam evaporation, and small amounts of radioactive 111 In were evaporated by resistance-heating. The evaporated films had the following stacking orders on kapton polyimide film substrate: (1) polyimide/Fe 50 nm/ 111 In/Fe x nm/Ag 20 nm (x¼ 0:2; 0:3; 1; 3; 5; 10), (2) polyimide/Fe 50 nm/Ag x nm/ 111 In/Ag 20 nm (x¼ 0; 0:2; 1). We used an Ag layer as a cap layer in order to prevent oxidation in air. TDPAC spectra were measured using a four-detector arrangement. The hyperfine magnetic field tends to be slightly larger when 111 In is close to the interface of the Fe/Ag layer. The intensity of perturbation damps rapidly as 111 In is close to the interface of Fe and Ag. These behaviors are thought to depend on electric field gradients and the influence of the surface roughness.

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&lt;SUP&gt;111&lt;/SUP&gt;Cd(&amp;larr;&lt;SUP&gt;111&lt;/SUP&gt;In) Time Differential Perturbed Angular Correlation (TDPAC) Spectroscopy in Fe/Ag Films