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Influence of Mn substitution on crystal structure and magnetic properties of Y2Zr1-xTi1-xMn2xO7 (x = 0.0, 0.05, 0.10) family of pyrochlore oxides

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Abstract

The present paper deals with the effect of Mn doping on structural and magnetic properties of Y2Zr1-xTi1-xMn2xO7 (x = 0.0, 0.05, 0.10) compounds. All the samples are single phase and crystallize in the cubic system with Fd-3m space group. Both lattice parameter a and cell volume V decrease with Mn substitution because of the smaller ionic radius of Mn4+ than Zr4+ and Ti4+. No significant differences between zero field-cooled (ZFC) and field-cooled (FC) curves are evident, demonstrating that the samples exhibit no magnetic ordering or spin glass-like transition. Both the Mn-doped phases exhibit antiferromagnetic behavior, which may possibly be due to the presence of super-exchange (SE) Mn4+–O2−–Mn4+ interactions. Small magnetic hysteresis loops are observed for the Mn-doped phases suggesting the presence of weak ferromagnetic interactions.

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  1. Department of Chemistry, University of Jammu, Jammu, India

    Mukesh Kumar Verma & Devinder Singh

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  1. Mukesh Kumar Verma
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  2. Devinder Singh
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Correspondence to Devinder Singh.

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Verma, M.K., Singh, D. Influence of Mn substitution on crystal structure and magnetic properties of Y2Zr1-xTi1-xMn2xO7 (x = 0.0, 0.05, 0.10) family of pyrochlore oxides. J Aust Ceram Soc 57, 339–345 (2021). https://doi.org/10.1007/s41779-020-00543-4

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