Synthesis of europium orthochromites (EuCrO3) nanoparticles by a combustion reaction method
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2017
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High purity powder samples of EuCrO3 were produced by a combustion reaction technique. The crystalline structure, morphology and magnetic properties were investigated by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis,
differential scanning calorimetry and magnetization measurements. The average particle size was found
to be about 30 nm. A weak ferromagnetism due to the canting of the Cr3þ spins was observed below a
Neel temperature ( TN) of 172 K, yielding, for a formula unit, 0.01 mB, 2.0 kOe and 0.22 mB for the remanent
magnetization, coercivity, and magnetization measured at the highest applied magnetic field (85 kOe),
respectively, for T ¼ 5 K. The Cr3þeO2eCr3þ bond angle was determined to be 156.3+ being consistent
with the lower value found for TN.
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Europium chromite, Orthochromites, Combustion reaction, Magnetic properties
Citação
MARÍN RAMÍREZ, J. M. et al. Synthesis of europium orthochromites (EuCrO3) nanoparticles by a combustion reaction method. Journal of Alloys and Compounds, Amsterdam, v. 690, p. 315-320, 2017. DOI: 10.1016/j.jallcom.2016.08.105. Disponível em: https://www.sciencedirect.com/science/article/pii/S0925838816324823. Acesso em: 4 set. 2023.