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- W2467102564 abstract "Abstract This work reports on the dimensionality effects on the magnetic behavior of Fe 3 Ga 4 compounds by means of magnetic susceptibility, electrical resistivity and specific heat measurements. Our results show that reducing the Fe 3 Ga 4 dimensionality, via nanowire shape, intriguingly modifies its electronic structure. In particular, the bulk system exhibits two transitions, a ferromagnetic (FM) transition temperature at T 1 = 50 K and an antiferromagnetic (AFM) one at T 2 = 390 K. On the other hand, nanowires shift these transition temperatures, towards higher and lower temperature for T 1 and T 2 , respectively. Moreover, the dimensionality reduction seems to also modify the microscopic nature of the T 1 transition. Instead of a FM to AFM transition, as observed in the 3D system, a transition from FM to ferrimagnetic (FERRI) or to coexistence of FM and AFM phases is found for the nanowires. Our results allowed us to propose the magnetic field-temperature phase diagram for Fe 3 Ga 4 in both bulk and nanostructured forms. The interesting microscopic tuning of the magnetic interactions induced by dimensionality in Fe 3 Ga 4 opens a new route to optimize the use of such materials in nanostructured devices." @default.
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- W2467102564 date "2016-06-22" @default.
- W2467102564 modified "2023-10-01" @default.
- W2467102564 title "Dimensionality tuning of the electronic structure in Fe3Ga4 magnetic materials" @default.
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- W2467102564 doi "https://doi.org/10.1038/srep28364" @default.
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