- Letter
Competing magnetocrystalline anisotropy and spin-dimension crossover in
Phys. Rev. B 110, L060405 – Published 7 August, 2024
DOI: https://doi.org/10.1103/PhysRevB.110.L060405
Abstract
We present a comprehensive magnetization study of a newly synthesized (x∼0.15) compound with ferromagnetic order at ∼191 K. The results of magnetization and magnetic entropy change suggest a strong interplay of in-plane ferromagnetic spin fluctuations with easy -axis ferromagnetic critical fluctuations, resulting in competing magnetocrystalline anisotropy. The universal critical scaling analysis further reveals the spin-dimension () crossover from Ising () to () across . This is in contrast to concentrations above with either Ising () or Heisenberg () spin characteristics across the transition. Our study indicates that the magnetic properties of undergo qualitative change below certain critical concentration.