Competition between Ferrimagnetism and Magnetic Frustration in Zinc Substituted YBaFe4O7 - Condensed Matter > Materials ScienceReportar como inadecuado




Competition between Ferrimagnetism and Magnetic Frustration in Zinc Substituted YBaFe4O7 - Condensed Matter > Materials Science - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: The substitution of zinc for iron in YBaFe4O7 has allowed the oxide seriesYBaFe4-xZnxO7, with 0.40 < x < 1.50, belonging to the -114- structural familyto be synthesized. These oxides crystallize in the hexagonal symmetry P63mc,as opposed to the cubic symmetry F-43m of YBaFe4O7. Importantly, the d.c.magnetization shows that the zinc substitution induces ferrimagnetism, incontrast to the spin glass behaviour of YBaFe4O7. Moreover, a.c. susceptibilitymeasurements demonstrate that concomitantly these oxides exhibit a spin glassor a cluster glass behaviour, which increases at the expense of ferrimagnetism,as the zinc content is increased. This competition between ferrimagnetism andmagnetic frustration is interpreted in terms of lifting of the geometricfrustration, inducing the magnetic ordering, and of cationic disordering, whichfavours the glassy state.



Autor: Tapati Sarkar, V. Pralong, V. Caignaert, B. Raveau

Fuente: https://arxiv.org/



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