TY - JOUR
T1 - Formation and magnetic properties of Ga-Pd-Tb 2/1 approximant
AU - So, Y. G.
AU - Takagi, K.
AU - Sato, T. J.
N1 - Funding Information:
This study was performed under the Cooperative Research Program of the ‘Network Joint Research Center for Materials and Devices’. A part of this study was performed at the Research Hub for Advanced Nanocharacterization, the University of Tokyo, supported by the ‘Nanotechnology Platform’, MEXT, Japan.
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2020/2/10
Y1 - 2020/2/10
N2 - The formation and magnetic properties of Tsai-type approximants in the Ga-Pd-Tb system were investigated. The 2/1 approximant with a lattice parameter of 2.313 nm formed in the Ga50.2Pd35.3Tb14.5 alloy annealed at 973 K for 100 h. The 2/1 approximant transformed into the corresponding 1/1 approximant through annealing at 1073 K in the alloy. For the 2/1 approximant, magnetic susceptibility measurements showed a sharp cusp at T N ∼ 5.8 K, and both the field-cooled and zero-field-cooled susceptibilities coincided, indicating an antiferromagnetic transition at T N. This is the first instance of long-range magnetic order in 2/1 approximants. On the other hand, spin-glass-like behavior was observed in the susceptibility for the 1/1 approximant, which may be attributed to the relatively large frustration of the icosahedral clusters in the 1/1 approximant.
AB - The formation and magnetic properties of Tsai-type approximants in the Ga-Pd-Tb system were investigated. The 2/1 approximant with a lattice parameter of 2.313 nm formed in the Ga50.2Pd35.3Tb14.5 alloy annealed at 973 K for 100 h. The 2/1 approximant transformed into the corresponding 1/1 approximant through annealing at 1073 K in the alloy. For the 2/1 approximant, magnetic susceptibility measurements showed a sharp cusp at T N ∼ 5.8 K, and both the field-cooled and zero-field-cooled susceptibilities coincided, indicating an antiferromagnetic transition at T N. This is the first instance of long-range magnetic order in 2/1 approximants. On the other hand, spin-glass-like behavior was observed in the susceptibility for the 1/1 approximant, which may be attributed to the relatively large frustration of the icosahedral clusters in the 1/1 approximant.
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U2 - 10.1088/1742-6596/1458/1/012003
DO - 10.1088/1742-6596/1458/1/012003
M3 - Conference article
AN - SCOPUS:85079694007
SN - 1742-6588
VL - 1458
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012003
T2 - 14th International Conference on Quasicrystals, ICQ 2019
Y2 - 26 May 2019 through 30 May 2019
ER -