Structural and magnetic characterization of zircon-type PrCrO4 oxide

Enrique Jimenez-Melero, J. Isasi, R. Saez-Puche

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    PrCrO4 has been synthesized as a single phase using oxidizing conditions, with a strong control on temperature and time. The zircon-type structure that this compound adopts has been refined from X-ray powder diffraction by the Rietveld method, showing tetragonal symmetry with space group I4 /amd, lattice parameters a=7.341(7) A, c=6.427(1) A and Z=4. Magnetic susceptibility measurements in the temperature range of 1.9–300 K reveal the presence of incipient ferromagnetic interactions in the Cr5+ sublattice below 12 K. When the temperature decreases, the superexchange Pr3+ –O–Cr5+ –O–Pr3+ antiferromagnetic interactions become predominant, giving rise to a net maximum at lower temperatures. The estimated Neel temperature is field-dependent, taking the value of 9 K when the magnetic field strength is 50 Oe. The M vs. H plots, at 2 and 8 K, indicate the existence of a metamagnetic transition, having obtained a critical field as low as 399 and 149 Oe respectively at the temperatures mentioned above.
    Original languageEnglish
    Pages (from-to)115–118
    JournalJournal of Alloys and Compounds
    Publication statusPublished - 2001


    • Magnetically ordered materials
    • Chemical synthesis
    • X-ray diffraction
    • Exchange and superexchange
    • Magnetic measurements

    Research Beacons, Institutes and Platforms

    • Advanced materials


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