Probing magnetoelastic effects of ultrathin antiferromagnets via magnetic domain imaging in ferromagnetic-antiferromagnetic bilayers

Bo Yao Wang, Jhen Yong Hong, Nae Yeou Jih, Kui Hon Ou Yang, Li Ren Chen, Hong Ji Lin, Yuet Loy Chan, Der Hsin Wei, Minn Tsong Lin

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We report an experimental investigation of the magnetoelastic effects of ultrathin antiferromagnets, performed by comparing the characteristic behavior of the induced spin-reorientation transition (SRT) of Co films in two types of epitaxially grown bilayers: face-centered-cubic (fcc)-like Mn/Co (fcc-Mn: a=3.75Å,c=3.76Å) and face-centered-tetragonal (fct)-Mn (a=3.61Å,c=3.78Å). Magnetic hysteresis loops and magnetic domain images indicate that both fcc-Mn and fct-Mn films can produce a (110) to (100) SRT in adjacent Co films when the thickness of the Mn layer is greater than a temperature-dependent critical value. Detailed analysis of the critical thickness of Mn films and the evolution of the Co domain structure upon SRT indicate that the fct-Mn film had a higher antiferromagnetic ordering temperature and stronger lateral Mn-Mn exchange coupling compared with the fcc-Mn film. The enhanced long-range antiferromagnetic ordering emerging concurrently with the in-plane lattice variation of the fcc-like Mn film in Mn/Co bilayers clearly showed the magnetoelastic effect of ultrathin antiferromagnets.

Original languageEnglish
Article number224424
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume90
Issue number22
DOIs
Publication statusPublished - 2014 Dec 29

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Magnetic domains
magnetic domains
Imaging techniques
retraining
Magnetic hysteresis
Exchange coupling
Hysteresis loops
emerging
hysteresis
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Wang, Bo Yao ; Hong, Jhen Yong ; Jih, Nae Yeou ; Ou Yang, Kui Hon ; Chen, Li Ren ; Lin, Hong Ji ; Chan, Yuet Loy ; Wei, Der Hsin ; Lin, Minn Tsong. / Probing magnetoelastic effects of ultrathin antiferromagnets via magnetic domain imaging in ferromagnetic-antiferromagnetic bilayers. In: Physical Review B - Condensed Matter and Materials Physics. 2014 ; Vol. 90, No. 22.
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Probing magnetoelastic effects of ultrathin antiferromagnets via magnetic domain imaging in ferromagnetic-antiferromagnetic bilayers. / Wang, Bo Yao; Hong, Jhen Yong; Jih, Nae Yeou; Ou Yang, Kui Hon; Chen, Li Ren; Lin, Hong Ji; Chan, Yuet Loy; Wei, Der Hsin; Lin, Minn Tsong.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 90, No. 22, 224424, 29.12.2014.

Research output: Contribution to journalArticle

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AU - Chen, Li Ren

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AU - Wei, Der Hsin

AU - Lin, Minn Tsong

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