The trade bias (EB) impact is extensively utilized in spintronics with 2D supplies like skinny movies. Exploring the EB impact in nanoparticles opens up super alternatives, reminiscent of miniaturization of units, enhanced effectivity, and tunable properties, all of that are size-dependent. Because of the elevated floor space to quantity ratio, magnetic nanoparticles show distinctive traits, permitting for the manipulation of their magnetic properties, such because the EB impact generally noticed between antiferromagnetic (AFM) and ferro-/ferrimagnetic (FM/FiM) supplies. This work employs a easy and extremely reproducible one-step thermal decomposition technique to manufacture colloidally steady Co0.6Fe0.4O-Co1.4Fe1.6O4 core-shell (CS) nanoparticles with a lattice-matched interface and robust trade coupling. We examine their temperature and field-dependent magnetic properties utilizing time-of-flight neutron diffraction and magnetometry. These nanoparticles exhibit the best reported EB values amongst core-shell nanoparticles, reaching a most of 10.34 kOe. Moreover, the core reveals antiferromagnetism above room temperature, with a Néel temperature of roughly 397 Okay, making it extra appropriate for high-temperature purposes. This examine paves the best way for designing core-shell biphasic nanoparticles to boost the EB impact and tune the efficient magnetic anisotropy, providing potential future purposes in nanospintronics and nanomedicine.
