Demonstration of Ru as the 4th ferromagnetic element at room temperature

P. Quarterman, Congli Sun, Javier Garcia Barriocanal, Mahendra Dc, Yang Lv, Sasikanth Manipatruni, Dmitri E. Nikonov, Ian A. Young, Paul M. Voyles, Jianping Wang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Development of novel magnetic materials is of interest for fundamental studies and applications such as spintronics, permanent magnetics, and sensors. We report on the first experimental realization of single element ferromagnetism, since Fe, Co, and Ni, in metastable tetragonal Ru, which has been predicted. Body-centered tetragonal Ru phase is realized by use of strain via seed layer engineering. X-ray diffraction and electron microscopy confirm the epitaxial mechanism to obtain tetragonal phase Ru. We observed a saturation magnetization of 148 and 160 emu cm-3 at room temperature and 10 K, respectively. Control samples ensure the ferromagnetism we report on is from tetragonal Ru and not from magnetic contamination. The effect of thickness on the magnetic properties is also studied, and it is observed that increasing thickness results in strain relaxation, and thus diluting the magnetization. Anomalous Hall measurements are used to confirm its ferromagnetic behavior.

Original languageEnglish (US)
Article number2058
JournalNature communications
Volume9
Issue number1
DOIs
StatePublished - Dec 1 2018

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Magnetics
Dromaiidae
Ferromagnetism
X-Ray Diffraction
ferromagnetism
Seeds
Electron Microscopy
Demonstrations
Strain relaxation
magnetization
Magnetoelectronics
Temperature
Magnetic materials
room temperature
Saturation magnetization
magnetic materials
Electron microscopy
Seed
seeds
Magnetization

PubMed: MeSH publication types

  • Journal Article
  • Research Support, Non-U.S. Gov't

Cite this

Demonstration of Ru as the 4th ferromagnetic element at room temperature. / Quarterman, P.; Sun, Congli; Garcia Barriocanal, Javier; Dc, Mahendra; Lv, Yang; Manipatruni, Sasikanth; Nikonov, Dmitri E.; Young, Ian A.; Voyles, Paul M.; Wang, Jianping.

In: Nature communications, Vol. 9, No. 1, 2058, 01.12.2018.

Research output: Contribution to journalArticle

Quarterman, P. ; Sun, Congli ; Garcia Barriocanal, Javier ; Dc, Mahendra ; Lv, Yang ; Manipatruni, Sasikanth ; Nikonov, Dmitri E. ; Young, Ian A. ; Voyles, Paul M. ; Wang, Jianping. / Demonstration of Ru as the 4th ferromagnetic element at room temperature. In: Nature communications. 2018 ; Vol. 9, No. 1.
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AU - Manipatruni, Sasikanth

AU - Nikonov, Dmitri E.

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