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arXiv · 1205.1313

Ferromagnetic behavior of ultrathin manganese nanosheets

Sreemanta Mitra·Amrita Mandal·Anindya Datta·Sourish Banerjee·Dipankar Chkaravorty
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Abstract

Ferromagnetic behaviour has been observed experimentally for the first time in nanostructured Manganese. Ultrathin ($\sim$ 0.6 nm) Manganese nanosheets have been synthesized inside the two dimensional channels of sol-gel derived Na-4 mica. The magnetic properties of the confined system are measured within 2K-300K temperature range. The confined structure is found to show a ferromagnetic behaviour with a nonzero coercivity value. The coercivity value remains positive throughout the entire temperature range of measurement. The experimental variation of susceptibility as a function of temperature has been satisfactorily explained on the basis of a two dimensional system with a Heisenberg Hamiltonian involving direct exchange interaction.

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Sreemanta Mitra, Amrita Mandal, Anindya Datta, Sourish Banerjee, Dipankar Chkaravorty. 2012-05-07. Ferromagnetic behavior of ultrathin manganese nanosheets. https://doi.org/10.1021/jp204765e

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