Smart Materials for Energy Communications and Security NATO by Igor A. Luk'yanchuk, Igor A. Luk'yanchuk, Daoud Mezzane

Smart Materials for Energy Communications and Security NATO by Igor A. Luk'yanchuk, Igor A. Luk'yanchuk, Daoud Mezzane

By Igor A. Luk'yanchuk, Igor A. Luk'yanchuk, Daoud Mezzane

This quantity is as a result the NATO complex learn Workshop on shrewdpermanent fabrics for power, Communications and safeguard held in Marrakech, Morocco, December 2007 in body of the NATO - technological know-how for Peace software. Its goal is to review a number of sizzling subject matters of fabrics physics comparable with technological difficulties of recent society with the point of interest in their implementation in Mediterranean discussion international locations: Algeria, Egypt, Mauritania, Morocco and Tunisia. The articles are written via global well-known specialists in fabrics technology and engineering. They assessment the country of paintings, fresh achievements, attainable and already carried out functions within the following fields of fabrics technology: fabrics for transmission, remedy and garage of knowledge, multiferroic, magnetic and superconducting fabrics for spintronics, electrochromic and nitride-based semiconducting fabrics for infrared and optoelectronic units, carbon-based terahertz digital applied sciences, memory-capacious fabrics. strength garage fabrics and photovoltaic cells Piezo and Electroactive fabrics for detectors, acoustic transducers and fuel sensors. sensible fabrics for electronics, environmental safeguard, size and characterisation recommendations.

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Figure 5. 3). From the linear region of these curves, we have deduced the values of A and B coefficients. The temperature dependence of the coefficient A (Fig. 6) reveals 38 E. DHAHRI ET AL. a linear behavior for all samples. For each sample, the intersection of this linear curve with the abscissa axis determines the value of the Curie temperature TC. On the other hand, the temperature dependence of the parameter B (Fig. 7) is found to be highly non linear. Figure 6. 3). Figure 7. 3). 20 found the B coefficient, for La manganites, to be strongly dependent on temperature and it also includes the elastic and magnetoelastic terms.

4 nm. 3 nm for Nb films obtained by common technique8 is the evidence of the higher quality of the films, prepared by developed technique. 5 4. Conclusions The presented technological approach yields significant improvement of superconducting properties of large area nanoscale Nb films in comparison with common methods based on DC-magnetron deposition. The thickness deviation of Nb layer along the sample with length of 80 mm does not exceed 5–6% for all strips and not more than 3–4% from strip to strip.

The first one, corresponding to the LaCeMnO3 phase, crystallizes in the orthorhombic structure with the Pnma space group. The second phase, with the Fm3m space group, was related to the presence of unreacted CeO2 amount. MAGNETIC REFRIGERATION 33 Figure 1. 5). The magnetization M as a function of the temperature at different applied magnetic field was measured using a Foner magnetometer (FON) equipped with a superconducting coil. 5). The Curie temperature (TC) of these samples was deduced from the dM/dT curves.

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