Negative thermal expansion and itinerant ferromagnetism in Mn1.4Fe3.6Si3

@article{Singh2021NegativeTE,
  title={Negative thermal expansion and itinerant ferromagnetism in Mn1.4Fe3.6Si3},
  author={Vikram Singh and R. Nath},
  journal={Journal of Applied Physics},
  year={2021}
}
We report the thermal expansion, critical behavior, magnetocaloric effect (MCE), and magnetoresistance (MR) on the polycrystalline Mn1.4Fe3.6Si3 compound around the ferromagnetic transition. A large negative volume thermal expansion (αV ∼ −20 × 10 −6 K) is observed across the transition temperature with a strong anisotropic variation of lattice parameters in the ab-plane. The anisotropic magnetoelasticity arises from the competition between magnetic ordering and structural deformation which… Expand

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