Cu-Doping Induced Structural Transformation and Magnetocaloric Enhancement in CoCr₂O₄ Nanoparticles.

ABSTRACT: This study systematically investigates the impact of Cu²⁺ doping on the structural, magnetic, and magnetocaloric properties of Cu_xCo_1-xCr₂O₄ nanoparticles synthesized via a solution combustion method. Cu incorporation up to x = 20% induces a progressive structural transformation from a cubic spinel to a trigonal corundum phase, as confirmed by X-ray diffraction and Raman spectroscopy. The doping process also leads to increased particle size, improved crystallinity, and reduced agglomeration. Magnetic measurements reveal a transition from hard to soft ferrimagnetic behavior with increasing Cu content, accompanied by a notable rise in the Curie temperature from 97.7 K (x = 0) to 140.2 K (x = 20%). The m

SUBMITTER: Ho MK 

PROVIDER: S-EPMC12300304 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature