Abstract
Structural studies of Zn2+Fe\(_{2}^{3+}\)(P2O7)2 and Cu0.5Zn0.5Fe2(P2O7)2 were made using powder X-ray diffraction and refined by Rietveld method. Both phosphates crystallize in an orthorhombic structure with Pnma space group. Magnetometry measurements showed that below TN = 5.6 (1), Zn2+Fe\(_{2}^{3+}\)(P2O7)2 becomes antiferromagnetic and the TN = 14 K is attributed to Cu0.5Zn0.5Fe2(P2O7)2. Mössbauer studies at room temperature and low temperature were performed in both samples.
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Funding
The Coimbra Chemistry Centre (CQC) is supported by FCT, through the project UI0313/QUI/2013, also co-funded by FEDER/COMPETE 2020-EU. This work was also supported by funds from FEDER (ProgramaOperacionalFactores de Competitividade COMPETE) and from FCT-Fundação para a Ciência e a Tecnologia under the Project No. UID/FIS/04564/2016. Access to TAIL-UC (XRD and VSM measurements) funded under QREN-Mais Centro Project ICT-2009-02-012-1890 is gratefully acknowledged. Hafsae Lamsaf thanks the Erasmus Mundus-Alidrisi Grant.
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Lamsaf, H., Oulmekki, A., Elghadraoui, E.H. et al. Magnetic Studies on New Mixed-Valence Phosphates Zn2+Fe\(_{2}^{3+}\)(P2O7)2 and Zn\(_{0.5}^{2+}\)Cu\(_{0.5}^{2+}\)Fe\(_{2}^{3+}\)(P2O7)2. J Supercond Nov Magn 32, 1377–1382 (2019). https://doi.org/10.1007/s10948-018-4848-8
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DOI: https://doi.org/10.1007/s10948-018-4848-8