Yan, Li-qinMacià Bros, FerranJiang, Zhong-weiShen, JunHe, Lun-huaWang, Fang-wei2020-05-082020-05-082008-05-190953-8984https://hdl.handle.net/2445/159301The structure and magnetic properties of the compounds Zn 1-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≤0.50 suggests a spin glass-like (SG-like) magnetic characterization whereas doping values of 0.58≤x≤0.90 define the system as '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 the Cu sublattice on the Cr sublattice to a preferential direction9 p.application/pdfeng(c) IOP Publishing, 2008Transformacions de fase (Física estadística)Propietats magnètiquesCromitaCourePhase transformations (Statistical physics)Magnetic propertiesChromiteCopperinfo:eu-repo/semantics/article6994742020-05-08info:eu-repo/semantics/openAccess