Critical phenomena of canonical spin glass systems with large Dzyaloshinsky–Moriya anisotropy

The cluster glass route of relaxor ferroelectrics

“…The latter one compares well with values from orientational (g D 0.95À1.7) [29] and magnetic spin and cluster glasses (g D 1.75À2.0). [30,31] Two remarks are in order being added to this delicate topic. First, the divergence of x 3 in Figure 7(c) is necessarily smeared in its asymptotic critical temperature range, 175 K < T < T g , mainly because of the finite frequency applied.…”

Dynamic scaling analysis of the long-range RKKY Ising spin glass DyxY1−xRu2Si2

“…The canonical SG is a group of SG materials consisting of a nonmagnetic metal with low-concentration magnetic impurities, such as Au(Fe), Cu(Mn), Ag(Mn), and Pt(Mn), which is categorized into the RKKY Heisenberg SG with weak random anisotropy. Most of the canonical SG materials exhibit a universal critical behavior with critical exponents γ ∼ 2, β ∼ 1, δ ∼ 3, and zν ∼ 7 [23][24][25][26] . On the other hand, Fe x Mn 1−x TiO 3 is a model magnet of the Ising SG with short-range (superexchange) interaction and shows a SG transition with critical exponents γ ≃ 4.0, β ≃ 0.54, δ ≃ 8.4, and zν ≃ 10 13,14,27 .…”