2023-11-012023-11-012022MELO, Rosane S.; FRANCO JR., Adolfo; BANERJEE, Prasun. Nanoscale-driven single-domain structure in nickel substituted superparamagnetic cobalt ferrites. Solid State Communications, Amsterdam. v. 341, e114560, 2021. DOI: 10.1016/j.ssc.2021.114560. Disponível em: https://www.sciencedirect.com/science/article/pii/S0038109821003446. Acesso em: 4 set. 2023.e- 1879-27660038-1098https://www.sciencedirect.com/science/article/pii/S0038109821003446In this letter, we reported nickel substituted cobalt nano-ferrites of ∼ 5 nm particle size synthesized with forced hydrolysis methods. The magnitude of the anisotropy constant decreases from 6.06 × 105 to 2.45 × 104 erg/cm3 due to the 𝑁 𝑖2+ doping. Whereas the gradual increment of 𝑁 𝑖2+ ions decreases the blocking temperature from ∼182 k to ∼52 K. The single-domain superparamagnetic behaviour observed here above the blocking temperature. This behaviour could help the material be a promising candidate in quantum technologies as a bit for storage devices.engAcesso RestritoNanostructuresMaterials physicsMagnetismArtigo10.1016/j.ssc.2021.114560