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Iron self-diffusion in nano-composite FeZr alloy has been investigated usingneutron reflectometry technique as a function of applied compressive stress. Acomposite target of (Fe+Zr) and (57Fe+Zr) was alternatively sputtered todeposit chemically homogeneous multilayer (CHM) structure,[Fe75Zr25/57Fe75Zr25]10. The multilayers were deposited on to a bent Si waferusing a 3-point bending device. Post-deposition, the bending of the substratewas released which results in an applied compressive stress on to themultilayer. In the as-deposited state, the alloy multilayer forms an amorphousphase, which crystallizes into a nano-composite phase when heated at 373 K.Bragg peaks due to isotopic contrast were observed from CHM, when measured byneutron reflectivity, while x-ray reflectivity showed a pattern correspondingto a single layer. Self-diffusion of iron was measured with the decay of theintensities at the Bragg peaks in the neutron reflectivity pattern afterthermal annealing at different temperatures. It was found that theself-diffusion of iron slows down with an increase in the strength of appliedcompressive stress.Comment: 12 pages, 15 figures, 43 ref., being submitted to Phys. Rev.

physical review. b, condensed matter and materials physics

Iron self-diffusion in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi><mml:mi mathvariant="normal">Zr</mml:mi><mml:mo>∕</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">Fe</mml:mi><mml:mprescripts /><mml:none /><mml:mn>57</mml:mn></mml:mmultiscripts><mml:mi mathvariant="normal">Zr</mml:mi></mml:mrow></mml:math>multilayers measured by neutron reflectometry: Effect of applied compressive stress

Iron self-diffusion inFeZr∕Fe57Zrmultilayers measured by neutron reflectometry: Effect of applied compressive stress