Abstract
β-MnO2 nanorods and flower-like structures were synthesized via a one-pot hydrothermal route at 160°C without using any template and surfactant. It is demonstrated that H+ in the solution has a significant effect on the morphology and resultant magnetic property of β-MnO2 crystals. Magnetic measurements indicate that the Néel temperature of the β-MnO2 flower-like structures is 98K, which is about 2K higher than that of the nanorods counterpart.
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