Experimental observation of long-range magnetic order in icosahedral quasicrystals

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dc.contributor.authorTamura, Ren_AU
dc.contributor.authorIshikawa, Aen_AU
dc.contributor.authorSuzuki, Sen_AU
dc.contributor.authorKotajima, Ten_AU
dc.contributor.authorTanaka, Yen_AU
dc.contributor.authorSeki, Ten_AU
dc.contributor.authorShibata, Nen_AU
dc.contributor.authorYamada, Ten_AU
dc.contributor.authorFujii, Ten_AU
dc.contributor.authorWang, CWen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorNawa, Ken_AU
dc.contributor.authorOkuyama, Den_AU
dc.contributor.authorSato, TJen_AU
dc.date.accessioned2021-12-20T22:07:59Zen_AU
dc.date.available2021-12-20T22:07:59Zen_AU
dc.date.issued2021-11-17en_AU
dc.date.statistics2021-11-23en_AU
dc.description.abstractQuasicrystals (QCs), first discovered in 1984, generally do not exhibit long-range magnetic order. Here, we report on long-range magnetic order in the real icosahedral quasicrystals (i QCs) Au–Ga–Gd and Au–Ga–Tb. The Au65Ga20Gd15i QC exhibits a ferromagnetic transition at TC = 23 K, manifested as a sharp anomaly in both magnetic susceptibility and specific heat measurements, along with an appearance of magnetic Bragg peak below TC. This is the first observation of long-range magnetic order in a real quasicrystal, in contrast to the spin-glass-like behaviors observed for the other magnetic quasicrystals found to date. Moreover, when Gd is replaced by Tb, i.e., for the Au65Ga20Tb15i QC, a ferromagnetic behavior is still retained with TC = 16 K. Although the sharp anomaly in the specific heat observed for the Au65Ga20Gd15i QC becomes broadened upon Tb substitution, neutron diffraction experiments clearly show marked development of magnetic Bragg peaks just below TC, indicating long-range magnetic order for the Au65Ga20Tb15i QC also. Our findings can contribute to the further investigation of exotic magnetic orders formed on real quasiperiodic lattices with unprecedented highest global symmetry, i.e., icosahedral symmetry. © 2021 The Authors - CC BY. Published by American Chemical Societyen_AU
dc.identifier.citationTamura, R., Ishikawa, A., Suzuki, S., Kotajima, T., Tanaka, Y., Seki, T., Shibata, N., Yamada, T., Fujii, T., Wang, C.-W., Avdeev, M., Nawa, K., Okuyama, D., & Sato, T. J. (2021). Experimental observation of long-range magnetic order in icosahedral quasicrystals. Journal of the American Chemical Society, 143(47), 19938–19944. doi:10.1021/jacs.1c09954en_AU
dc.identifier.issn1520-5126en_AU
dc.identifier.issue47en_AU
dc.identifier.journaltitleJournal of the American Chemical Societyen_AU
dc.identifier.pagination19938-19944en_AU
dc.identifier.urihttps://doi.org/10.1021/jacs.1c09954en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12592en_AU
dc.identifier.volume143en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectMagnetic propertiesen_AU
dc.subjectGroup theoryen_AU
dc.subjectGolden_AU
dc.subjectTransition elementsen_AU
dc.subjectQuantum mechanicsen_AU
dc.subjectOrder parametersen_AU
dc.subjectSpecific heaten_AU
dc.subjectFerromagnetismen_AU
dc.subjectBragg curveen_AU
dc.subjectSpin glass stateen_AU
dc.titleExperimental observation of long-range magnetic order in icosahedral quasicrystalsen_AU
dc.typeJournal Articleen_AU
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