Strain induced exchange-spring magnetic behavior in amorphous (TbDy)Fe2 thin films

K. P. Mohanchandra, S. V. Prikhodko, K. L. Wang, G. P. Carman

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

In this paper, we report a strain induced exchange-spring magnetic behavior in sputter deposited (TbDy)Fe2 amorphous thin films with phase-separated layers of (TbDy)-rich and Fe-rich at room temperature. The magnetic hysteresis loops at different strain levels were obtained with a magneto-optic Kerr effect set-up incorporating a mechanical four-point bending fixture. The unstrained film exhibits a typical ferrimagnetic hysteresis loop while the strained structure exhibits step-like hysteresis loops representative of an exchange-spring magnetic system. The mechanically strained film changes the coercivity/remanence values from positive to negative. The observed magnetic changes under strain are attributed to magnetic anisotropy modifications in the highly magnetoelastic TbDy-rich layer.

Original languageEnglish
Article number043911
JournalJournal of Applied Physics
Volume121
Issue number4
DOIs
Publication statusPublished - 2017 Jan 28

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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