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The main advantage of using SQUIDs in NDE is its unrivalled magnetic sensitivity down to very low frequencies, which allows the detection of weak magnetic fields due to defects also in very low electrical conductive materials like CFRP, commonly used in aerospace structures. In this work the fatigue damage evaluation on CFRP laminates, cross-ply or quasi-isotropic, in real-time during quasi-static loading is monitored. The material responses are detected by using an Eddy Current technique with HTS dc SQUID magnetometer.

Femtosecond spectroscopy has been used to investigate the quasi-particle relaxation times in nearly optimally doped Fe-based superconductors FeSe 0.5Te0.5 and optimally doped Ba-122 thin films growth on a Fe buffer layer. Experimental results concerning the temperature dependence of the relaxation time of such pnictides both in the superconducting state are now presented and discussed. Modelling the T-dependence of relaxation times an estimation of both electron-phonon constant and superconducting energy gap in the excitation spectrum of both Fe(Se,Te) and Ba-122 compounds is obtained.

We present characterization of Ba(Fe1-x Cox) 2As2 thin film using a magneto-optical Kerr effect setup based on photoelastic modulation. The magneto optical technique has been used to analyse the thickness and the temperature dependence of the magnetic properties of epitaxial Ba(Fe1-x Cox)2As2/Fe thin films grown on MgO substrate. The first harmonics, of the reflected laser beam intensity from pnictide thin films is compared with a reference Fe thin film. The hysteretic loops of such samples at room temperature and at 5K are presented.