Magnetic properties of La3Ni2SbxTayNb1–x–yO9; from relaxor to spin glass

Neutron diffraction experiments conducted at 5 K in a magnetic field 0 ≤ H/kOe ≤50 have shown that the monoclinic perovskite La3Ni2TaO9 behaves as a relaxor ferromagnet. Compositions in the series La3Ni2SbxTayNb1–x–yO9 have been synthesized in polycrystalline form. Electron microscopy, X–ray diffraction and neutron diffraction have shown that the solid solutions are largely homogeneous and monophasic. Magnetometry and neutron diffraction have shown that the relaxor magnetisation persists in low fields when x + y = 1 but is rapidly diminished by the introduction of niobium. This change in magnetic behaviour is ascribed to the differences in the d–orbital energies of Sb5+, Nb5+ and Ta5+. © 2019 The Authors CC BY licence. Published by Elsevier Inc.

Keywords

Perovskites, Oxides, Ferromagnetism, Neutron diffraction, Monoclinic lattices, X-ray diffraction, Electron microscopy

Citation

Chin, C.-M., Battle, P. D., Hunter, E. C., Avdeev, M., Hendrickx, M., Hadermann, J. (2019). Magnetic properties of La3Ni2SbxTayNb1–x–yO9; from relaxor to spin glass. Journal of Solid State Chemistry, 273, 175-185 doi:10.1016/j.jssc.2019.02.044

URI

https://doi.org/10.1016/j.jssc.2019.02.044
https://apo.ansto.gov.au/dspace/handle/10238/10902

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