Transition from spin glass to paramagnetism in the magnetic properties of PrAu2Si2

D. X. Li, Y. Shimizu, A. Nakamura, Y. J. Sato, A. Maurya, Y. Homma, Fuminori Honda, D. Aoki

研究成果: Article査読

抄録

It is unexpected that a spin-glass (SG) transition, which generally occurs only in systems with some form of disorder, was observed in the ThCr2Si2-type compound PrAu2Si2 at a temperature of ∼3 K. This puzzling phenomenon was later explained based on a novel dynamic frustration model that does not involve static disorder. We present the results of re-verification of the reported SG behaviors by measuring the physical properties of three polycrystalline PrAu2Si2 samples annealed under different conditions. Indeed, in the sample annealed at 827 °C for one week, a SG transition does occur at a temperature of T f ∼2.8 K as that reported previously in the literature. However, it is newly found that the SG effect is actually more pronounced in the as-cast sample, and almost completely disappears in the well-annealed (at 850 °C for four weeks) sample. The annealing effect observed in PrAu2Si2, that is, SG to paramagnetism transition is discussed by comparing with earlier results reported on the same system and other isomorphic compounds.

本文言語English
論文番号135805
ジャーナルJournal of Physics Condensed Matter
34
13
DOI
出版ステータスPublished - 2022 3月 30

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学

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