Structural-transition-driven antiferromagnetic to spin-glass transition in Cd-Mg-Tb 1/1 approximants
| Autor: | Satoshi Ohhashi, Tsunetomo Yamada, Taku J. Sato, Daisuke Okuyama, Kenji Tsuda, Farid Labib, Nobuhisa Fujita, An Pang Tsai, Daisuke Morikawa |
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| Rok vydání: | 2020 |
| Předmět: |
Condensed Matter - Materials Science
Materials science Spin glass Condensed matter physics Icosahedral symmetry Magnetism Superlattice Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Quasicrystal 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Magnetic susceptibility Condensed Matter::Materials Science 0103 physical sciences Antiferromagnetism Condensed Matter::Strongly Correlated Electrons General Materials Science 010306 general physics 0210 nano-technology Monoclinic crystal system |
| Zdroj: | Journal of physics. Condensed matter : an Institute of Physics journal. |
| ISSN: | 1361-648X |
| Popis: | The magnetic susceptibility of the 1/1 approximants to icosahedral quasicrystals in a series of Cd85-xMgxTb15 (x = 5, 10, 15, 20) alloys was investigated in detail. The occurrence of antiferromagnetic to spin-glass-like transition was noticed by increasing Mg. Transmission electron microscopy analysis evidenced a correlation between the magnetic transition and suppression of the monoclinic superlattice ordering with respect to the orientation of the Cd4 tetrahedron at T > 100 K. The possible origins of this phenomenon were discussed in detail. The occurrence of the antiferromagnetic to spin-glass -like magnetic transition is associated with the combination of chemical disorder due to a randomized substitution of Cd with Mg and the orientational disorder of the Cd4 tetrahedra. 9 pages, 9 figures |
| Databáze: | OpenAIRE |
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