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Updated: May 23, 2026

Effect of Microwave Synthesis Conditions on the Structure of Nickel Hydroxide Nanosheets
Published on: August 18, 2023
Metamagnetism and weak ferromagnetism in nickel (II) oxalate crystals
E Romero-Tela1, M E Mendoza, R Escudero
1Instituto de Física, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico. evarotel@gmail.com
Abstract:
Microcrystals of orthorhombic nickel (II) oxalate dihydrate were synthesized through a precipitation reaction of aqueous solutions of nickel chloride and oxalic acid. Magnetic susceptibility exhibits a sharp peak at 3.3 K and a broad rounded maximum near 43 K. We associated the lower maximum with a metamagnetic transition that occurs when the magnetic field is about ≥3.5 T. The maximum at 43 K is typical of 1D antiferromagnets, whereas weak ferromagnetism behavior was observed in the range of 3.3–43 K.
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