Abstract
The elastic modulus of the body-centered cubic (BCC) films is studied based on the moment method. For Fe, Ta, and W films a clear elastic modulus dependence of the thickness at ambient conditions and under temperatures up to 2000 K. The obtained results of the values of elastic modulus metallic films are smaller than the corresponding values of bulk material. Calculated results show the effects of temperature and thickness of elastic modulus for Fe, Ta, and W metallic films. On the other hand, when the thickness of thin films is about 60nm then the elastic modulus of the BCC films approaches the values of bulk material. Our results are compared with the other theoretical results and experimental values of bulk materials.
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