Multilayers of Ni-2lAl and Ni-ZOCr-1OAl were subjected to ion beam mixing using 350 keV Ni+ ions and/or thermal annealing at 440 o C to study the development of grain growth and phase morphology. Two film thicknesses of Ni-21 Al (60 and 120 nm) were investigated. Both thermal annealing and irradiation resulted in grain growth in the Ni-21Al samples. Grain size increased by a factor of 7 after i...

Abstract Reactive multilayer systems consisting of alternating nanoscale Al and Ni layers are applicable in joining, various pyrotechnic applications thermal batteries. Since diffusion based high-temperature synthesis occurs without the presence air, efforts have focused on investigating understanding fundamental reaction processes characteristics. The aim this study is to expose reactive multi...

Ultrafast demagnetization induced by femtosecond laser pulses in thin metallic layers is caused the outflow of spin-polarized hot-electron currents describable superdiffusive transport model. These laser-generated spin can cross interface into another magnetic layer and give rise to magnetization dynamics valves with noncollinear magnetizations. To describe ultrafast such nanostructures, we dev...

We report the experimental observation of room-temperature perpendicular magnetic anisotropy ~PMA! in Ni/Pd ~111! multilayer films having the thickness range of 5–11 Å Ni and 4–11 Å Pd sublayers, prepared by direct current magnetron sputtering on glass substrates at Ar sputtering pressure of 7 mTorr. Perpendicular magnetic anisotropy was found to be sensitively dependent on both Niand Pd-sublay...

Self-healing materials are able to partially or completely reverse the damage inflicted on them. The possibility of self-healing mechanical and chemical failures that occur during service will improve the lifetime and reliability of structural materials. For this purpose, two main steps must be considered: (i) detection, and (ii) repairing (healing) of cracks. The exothermic character of reacti...

Vapor deposited multilayers consisting of a low electrical resistivity conductor sandwiched between ferromagnetic metals such as cobalt or nickel-iron alloys sometimes exhibit giant magnetoresistance ~GMR!. The GMR properties of these films are a sensitive function of structure and defects in the films and therefore depend upon the processing conditions used for their synthesis. A three-dimensi...