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Design is an innovative and highly iterative process. It is also a decision-making process. Decisions sometimes have to be made with too little information, occasionally with just the right amount of information, or with an excess of partially contradictory information. My experience in design has been begun since 30 years. you are welcome

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Effect of 20% Cr-doping on structural and electrical properties of La0.67Ca0.33MnO3 perovskite

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Abstract

Structural and electrical properties of La0.67Ca0.33Mn1-xCrxO3 (x = 0 and 0.2) manganites are studied in this work. The samples were prepared using Pechini sol-gel method at 1173 K. Rietveld analysis of X-ray diffraction (XRD) patterns shows the formation of pure crystalline phase with orthorhombic Pnma structure with a decrease of the unit cell volume and crystalline domain size when increasing Cr-content. Electrical properties of the samples have been investigated using complex impedance analysis in 180 320 K temperature range with varying frequency between 40 and 10(6) Hz. For both samples, frequency dependence of imaginary part...

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Books and literature

Chapters in Books

Chapters in Books

Chapter 01: Parameter identifacation of a sandwich beam using numerical-based inhomogeneous Wave Correlation method. Authors : Ramzi Ajili, Olivier Bareille, Mohamed Lamjed Bouazizi, Mohamed Najib Ichchou,...

Scientific Research

  • Design in Mechanical Energy

    Methods of model reduction / Sub-structuring / Passive damping viscoelastic/

    Multi-objective optimization / Robust design/ Pumping Energy/Harvesting energy

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