MATERIALS SCIENCE & ENGINEERING A Reaction kinetics and biasing in A1/Ni multilayers. Edelstein, A., S., Everett, R., K., Richardson, G., R., Qadri, S., B., Foley, J., C., & Perepezko, J., H. Technical Report 1995.
MATERIALS SCIENCE & ENGINEERING A Reaction kinetics and biasing in A1/Ni multilayers [pdf]Paper  abstract   bibtex   
The phase evolution from annealing ion-beam-sputtered A1/Ni multilayers was studied using X-ray diffraction and differential scanning calorimetry measurements. The sequence of phase formation depends on the modulation wavelength A and the average composition (c). The initial phase formed may also depend on the composition gradient. Annealing short A samples with a composition of either A10.40Nio.60 or A10.75Ni0.25 produced only A1Ni or AI3Ni , i.e. the stable phase with the same (c). At intermediate A, A19Ni z was often the initial phase formed. Experiments were performed on multilayer samples in which 20 nm A1Ni layers, denoted as biasing layers, were placed between each A1 and Ni layer. The AINi modified the kinetics, increasing the nucleation temperatures and changing the amounts of the product phases. The A1Ni layer appears to dissociate in the later stages of annealing. Composition gradients and biasing layers may be used to control the phases present in technological materials.
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 title = {MATERIALS SCIENCE & ENGINEERING A Reaction kinetics and biasing in A1/Ni multilayers},
 type = {techreport},
 year = {1995},
 keywords = {1995,al,aluminum,biasing,kinetics,multilayers,ni,nickel,reaction},
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 abstract = {The phase evolution from annealing ion-beam-sputtered A1/Ni multilayers was studied using X-ray diffraction and differential scanning calorimetry measurements. The sequence of phase formation depends on the modulation wavelength A and the average composition (c). The initial phase formed may also depend on the composition gradient. Annealing short A samples with a composition of either A10.40Nio.60 or A10.75Ni0.25 produced only A1Ni or AI3Ni , i.e. the stable phase with the same (c). At intermediate A, A19Ni z was often the initial phase formed. Experiments were performed on multilayer samples in which 20 nm A1Ni layers, denoted as biasing layers, were placed between each A1 and Ni layer. The AINi modified the kinetics, increasing the nucleation temperatures and changing the amounts of the product phases. The A1Ni layer appears to dissociate in the later stages of annealing. Composition gradients and biasing layers may be used to control the phases present in technological materials.},
 bibtype = {techreport},
 author = {Edelstein, A S and Everett, R K and Richardson, G R and Qadri, S B and Foley, J C and Perepezko, J H}
}
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