Magnetic Properties of CoCl2and NiCl2

Magnetization Process and Collective Excitations in theS=1/2Triangular-Lattice Heisenberg AntiferromagnetBa3CoSb2Susuki1, Kurita2, Tanaka3 et al. 2013Phys. Rev. Lett.217272641View full textAdd to dashboardCite

“…The H s and M s values are both consistent with those obtained from our previous results of powder samples [18]. The continuous increase in M raw above H s is attributed to the large Van Vleck paramagnetism characteristic of Co 2+ in the octahedral environment [21,22]. From the magnetization slopes above H s , the Van Vleck paramagnetic susceptibility is determined as χ VV = 1.59 × 10 −2 and 1.90 × 10 −2 (µ B /T)/Co 2+ for H ab and H c, respectively.…”

“…The DM interaction is absent in Ba 3 CoSb 2 O 9 because of the highly symmetric crystal structure with the space group P 6 3 /mmc. The effective magnetic moment of Co 2+ ions, which possess the true spin S = 3/2, can be described by the pseudospin-1/2 at low temperatures well below |λ|/k B ≈ 250 K (λ: spin orbit coupling constant) [21,22]. Thus, the M s /3 plateau observed using Ba 3 CoSb 2 O 9 powder samples in Ref.…”

“…3). The magnetic moment of Co 2+ in Ba 3 CoSb 2 O 9 is almost isotropic, unlike in typical Co compounds [21]. The saturation magnetization M s is determined as 1.93 and 1.94 µ B /Co 2+ for H ab and H c, respectively.…”

Field-Induced Magnonic Liquid in the 3D Spin-Dimerized AntiferromagnetSr3Cr2O8Wang1, Quintero-Castro2, Жерлицын3 et al. 2016Phys. Rev. Lett.182801View full textAdd to dashboardCite

“…where i, j denotes the nearest neighbors, J is the nearest-neighbor intra-chain antiferromagnetic exchange interaction, and ∆ refers to an Ising-like anisotropy 37,38 . The last term is the Zeeman interaction term with the transverse magnetic field H x along the a axis, the Landé g-factor, and the Bohr magneton µ B .…”

Crystal and Magnetic Structures in Layered, Transition Metal Dihalides and Trihalides

“…This arises from stronger ferromagnetic coupling within the layers compared to the weak antiferromagnetic coupling between them, and led to much of the early interest in these materials, as summarized in [114] and references therein. The most complex behavior is seen in FeI 2 [113].…”