Magnetic quasicrystals

Investigating the nature and origin of the magnetic properties of quasicrystals and their approximants.

The research

Quasicrystals have long-ranged aperiodic atomic structures whose characteristics and properties are yet to be understood [1]. Information of these properties may be extracted by collecting data on quasicrystals, as well as approximants of quasicrystals, which are periodic crystals with similar local structure. Quasicrystals and approximant crystals are mostly intermetallic systems, which may include magnetic rare earths such as Gd, Ho or Tb, and display specific magnetic properties[1,2]. The exact origin and nature of the magnetic interaction in these systems in not completely understood.

References

Magnetism in icosahedral quasicrystals: current status and open questions, A. Goldman, Sci. Technol. Adv. Mater. 15, 044801 (2014).
Whirling spin order in the quasicrystal approximant Au72Al14Tb14, T. J. Sato et al., Phys. Rev. B 100, 054417 (2019).

Publications

Nonequilibrium dynamical behavior in noncoplanar magnets with chiral spin texture, T. Shiino, F. Denoel, G. H. Gebresenbut, C. Pay Gomez, P. Nordblad, R. Mathieu, Phys. Rev. B Letter 195, L180409 (2022).

Examination of the critical behavior and magnetocaloric effect of the ferromagnetic Gd-Au-Si quasicrystal approximants, T. Shiino, G. H. Gebresenbut, C. Pay Gomez, U. Haussermann, P. Nordblad, A. Rydh, R. Mathieu, Phys. Rev. B 106, 174405 (2022).

Singular magnetic dilution behavior in a quasicrystal approximant, T. Shiino, F. Denoel, G. H. Gebresenbut, D. C. Joshi, Y.-C. Huang, C. Pay Gomez, U. Häussermann, A. Rydh, R. Mathieu, Phys. Rev. B. 104, 224411 (2021).