Title :
Hydrogen induced inelastic anomaly in Fe80Zr20 multilayers
Author :
Rengarajan, S. ; Yun, E.J. ; Kang, W.S. ; Walser, R.M.
Author_Institution :
I/UCR Center for Magnetics, Texas Univ., Austin, TX, USA
fDate :
9/1/1996 12:00:00 AM
Abstract :
This study investigated the effect of electrolytic hydrogenation on the mechanical and magnetic properties of compositionally modulated (CM) Fe/Zr multilayers with composition Fe80Zr20 and modulation wavelengths (λ) in the range 3 Å⩽λ⩽50 Å. An amorphous (a) to crystalline (c) structural transition occurred in the Fe sublayers of multilayers with λ between 30 Å and 50 Å. A rapid relaxation in the stress induces by hydrogenation was observed only in multilayers with λ=20 Å. The relaxation was confirmed as a structural change by a simultaneous relaxation in coercivity, that also occurred only in the λ=20 Å multilayer. This inelastic anomaly is compatible with previous reports of a bond softening precursor to the amorphous→crystalline phase transition in Fe multilayers
Keywords :
amorphous magnetic materials; coercive force; crystallisation; ferromagnetic materials; hydrogen; iron alloys; magnetic multilayers; magnetoelastic effects; zirconium alloys; 20 A; 30 to 50 A; Fe80Zr20; Fe80Zr20 multilayers; amorphous to crystalline structural transition; bond softening; coercivity; electrolytic hydrogenation; inelastic anomaly; magnetic properties; rapid relaxation; Amorphous materials; Crystallization; Hydrogen; Iron; Magnetic modulators; Magnetic multilayers; Magnetic properties; Nonhomogeneous media; Stress; Zirconium;
Journal_Title :
Magnetics, IEEE Transactions on
