Whirling spin order in the quasicrystal approximant Au72Al14Tb14

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Date
2019-08-13
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American Physical Society
Abstract
A neutron powder diffraction experiment has been performed on the quasicrystal approximant Au72Al14Tb14, a body-centered-cubic crystal of icosahedral spin clusters. The long-range antiferromagnetic order was confirmed at the transition temperature TN=10.4 K. The magnetic structure consists of noncoplanar whirling spins on the icosahedral clusters, arranged in an antiferroic manner. A simple icosahedral spin-cluster model with uniaxial anisotropy accounts well the whirling spin order as well as the in-field metamagnetic transition, indicating that the icosahedral symmetry is essential. ©2019 American Physical Society
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Keywords
Neutron diffraction, Antiferromagnetism, Magnetism, Crystals, Spin, Phase transformations
Citation
Sato, T. J, Ishikawa, A., Sakurai, A., Hattori, M., Avdeev, M., & Tamura, R. (2019). Whirling spin order in the quasicrystal approximant Au72Al14Tb14. Physical Review B, 100(5), 054417. doi:10.1103/PhysRevB.100.054417
URI
https://doi.org/10.1103/PhysRevB.100.054417
 https://apo.ansto.gov.au/dspace/handle/10238/10573
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