Low-Temperature Ferromagnetic Order in a Two-Level Layered Co²⁺ Material.

ABSTRACT: The magnetic properties of a 2D layered material consisting of high-spin Co²⁺ complexes, [Co(NH₃NH₂)₂(H₂O)₂Cl₂]Cl₂ (CoHyd ₂ Cl ₄ ), have been extensively characterized using electron paramagnetic resonance, magnetic susceptibility, and low-temperature heat capacity measurements. Electron paramagnetic resonance spectroscopy studies suggest that below 50 K, the J = 3/2 orbital triplet state of Co is gradually depopulated in favor of the J = 1/2 spin state, which is dominant below 20 K. In light of this, the magnetic susceptibility has been fitted with a two-level model, indicating that the interactions in this material are much weaker than pr

SUBMITTER: Doheny PW 

PROVIDER: S-EPMC11393796 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature