Abstract
Strontium titanate perovskite oxide materials offer a number of advantages in microelectromechanical systems (MEMS) due to the micro-structural, electronic, magnetic and mechanical properties. In this paper, we report theoretical study on structural, electronic, magnetic and mechanical properties of strontium titanate perovskite oxide SrTiO3. This material selected as energetic substrate primarily for its dimensional stability that is relatively insensitive to environment conditions. The calculations performed using the first-principles full-potential linear muffin-tin orbital (FP-LMTO) method, under the local spin density approximation (LSDA) and plus the on-site Coulomb interaction (LSDA+U) scheme. The analysis of densities of states, exchange interactions and magnetic moments reveals that SrTiO3 exhibits a semiconductor character with an energy gap of Eg = 2.68 eV, in excellent agreement with the previous experimental results. Keywords: MEMS material; Perovskite; Electronic properties; FP-LMTO method.
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