Journal of Alloys and Compounds2022，Vol.9178.DOI:10.1016/j.jallcom.2022.165532

Helical spin ordering in room-temperature metallic antiferromagnet Fe3Ga4

Wilfong B. Jamer M.E. Fedorko A. Barbiellini B. Bansil A. Heiman D. Baigutlin D.R. Miroshkina O.N. Buchelnikov V.D. Sokolovskiy V.V. Zhou X. Chung D.Y. Kanatzidis M.G. Stephen G.M. Friedman A.L. Sharma V. Bishop O. Barua R. Bennett S.P.
Journal of Alloys and Compounds2022，Vol.9178.DOI:10.1016/j.jallcom.2022.165532
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  • NSTL
  • Elsevier

Helical spin ordering in room-temperature metallic antiferromagnet Fe3Ga4

Wilfong B. 1Jamer M.E. 1Fedorko A. 2Barbiellini B. 2Bansil A. 2Heiman D. 2Baigutlin D.R. 3Miroshkina O.N. 3Buchelnikov V.D. 3Sokolovskiy V.V. 3Zhou X. 4Chung D.Y. 4Kanatzidis M.G. 4Stephen G.M. 5Friedman A.L. 5Sharma V. 6Bishop O. 6Barua R. 6Bennett S.P.7
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作者信息

  • 1. Physics Department United States Naval Academy
  • 2. Physics Department Northeastern University
  • 3. Faculty of Physics Chelyabinsk State University
  • 4. Materials Science Division Argonne National Laboratory
  • 5. Laboratory for Physical Sciences
  • 6. Mechanical and Nuclear Engineering Virginia Commonwealth University
  • 7. Material Science and Technology Division US Naval Research Laboratory
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Abstract

? 2022Metallic Fe3Ga4 displays a complex magnetic phase diagram that supports an intermediate antiferromagnetic (AFM) helical spin structure (HSS) state at room temperature which lies between two ferromagnetic (FM) phases. Magnetic measurements along the three crystallographic axes were performed in order to develop a model for the temperature and field dependence of the HSS state. These results show that the AFM state is a helically ordered spiral propagating along the c-axis with the magnetic moments rotating in the ab-plane. Under applied magnetic field, the AFM state exhibits a metamagnetic transition to conical ordering before entering a fully field-polarized FM state at high fields. The conical ordering in the AFM state is anisotropic even within the ab-plane and may gives rise to Berry phase effects in transport measurements. Metallic conductivity from density of states computations was confirmed through resistivity measurements and no anomalous behavior was observed through the various magnetic transitions.

Key words

Density functional theory (DFT)/Growth from vapor/Magnetically ordered materials/Metamagnetism/Transition metal alloy and compounds

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出版年

2022
Journal of Alloys and Compounds

Journal of Alloys and Compounds

EISCI
ISSN：0925-8388
被引量2
参考文献量37
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