Glassy magnetic behavior induced by $Cu^{2+}$ substitution in frustrated antiferromagnet $ZnCr_2O_4$

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dc.creatorYan, Li-qin
dc.creatorMaciá, Ferran
dc.creatorZhang, Jun-rong
dc.creatorJiang, Zhong-wei
dc.creatorShen, Jun
dc.creatorHe, Lun-hua
dc.creatorWang, Fang-wei
dc.date2008-02-01
dc.date.accessioned2026-07-07T09:18:16Z
dc.date.available2026-07-07T09:18:16Z
dc.descriptionStructure and magnetic properties of the compounds $Zn_{1-x}Cu_xCr_2O_4$ (ZCCO) are investigated systematically. A structural phase transition from space-group symmetry $Fd3m$ to $I4_1/amd$ is observed in ZCCO. The critical value of the doping, $x$, appears at $0.58\sim 0.62$ 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 $ZnCr_2O_4$, which may correlate with the pinning effect of Cu sublattice on Cr sublattice to a preferential direction.
dc.description9 pages, 11 figures
dc.identifierhttps://arxiv.org/abs/0802.0134
dc.identifierhttp://arxiv.org/abs/0802.0134
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/153961
dc.subjectMaterials Science
dc.subjectDisordered Systems and Neural Networks
dc.titleGlassy magnetic behavior induced by $Cu^{2+}$ substitution in frustrated antiferromagnet $ZnCr_2O_4$
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