2008/02/01 by Liqin Yan, Ferran Macià, Yan, Li-qin +11
Physics and Astronomy · #Advanced Condensed Matter Physics #Disordered Systems and Neural Networks (cond-mat.dis-nn) #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics
paper · pdf · doi:10.48550/arxiv.0802.0134
openalex publication_date 2008/02/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Structure and magnetic properties of the compounds Zn1-xCuxCr2O4 (ZCCO) are investigated systematically. A structural phase transition from space-group symmetry Fd3m to I41/amd is observed in ZCCO. The critical value of the doping, x, appears at 0.58∼ 0.62 through the appearance of a splitting of diffraction peaks at room temperature. Measurements of dc magnetization, ac susceptibility, memory effect and exchange bias-like (EB-like) effect have been performed to reveal the glassy magnetic behaviors of ZCCO. The system with x\leqslant 0.50 is suggested as a spin glass-like (SG-like) of magnetic characterization whereas doping values of 0.58\leqslant x\leqslant 0.90 defines the system as a "cluster glass-like" (CG-like) with unidirectional anisotropy. The Cu content suppresses the geometrical frustration of ZnCr2O4, which may correlate with the pinning effect of Cu sublattice on Cr sublattice to a preferential direction.