Effects of hydrogen absorption on magnetism in trilayers

Charles Weiss, René Hübner, Martin Saunders, Anna Semisalova, Jonathan Ehrler, Nataliia Schmidt, Johannes Seyd, Manfred Albrecht, Shadab Anwar, Jürgen Lindner, Kay Potzger, Mikhail Kostylev

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The effects of hydrogen absorption on the effective magnetization , gyromagnetic ratio , Gilbert damping constant , and the inhomogeneous linewidth broadening in (16 nm)/Pd(15 nm) trilayer films (, 3, 5, 8, 10, 20, 40 nm) were investigated with ferromagnetic resonance (FMR), transmission electron microscopy, and vibrating sample magnetometry. In the presence of a hydrogen atmosphere, the samples show a reduction of their FMR linewidth which is found to stem purely from a reduction of the inhomogeneous linewidth broadening. This is attributed to a rearrangement of atoms at the Py/Y interface in the presence of hydrogen, making the Py/Y interface more homogeneous. In addition, a reduction of was seen for all samples in the hydrogen atmosphere which is typical for an increase of the interfacial perpendicular magnetic anisotropy at the Py/Y interface.

Original languageEnglish
Article numberA17
JournalPhysical Review B
Volume104
Issue number9
DOIs
Publication statusPublished - 1 Sep 2021

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