Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/319694
Type: Artigo de periódico
Title: Dimensionality Tuning Of The Electronic Structure In Fe3ga4 Magnetic Materials
Abstract: This work reports on the dimensionality effects on the magnetic behavior of Fe3Ga4 compounds by means of magnetic susceptibility, electrical resistivity, and specific heat measurements. Our results show that reducing the Fe3Ga4 dimensionality, via nanowire shape, intriguingly modifies its electronic structure. In particular, the bulk system exhibits two transitions, a ferromagnetic (FM) transition temperature at T1 = 50 K and an antiferromagnetic (AFM) one at T2 = 390 K. On the other hand, nanowires shift these transition temperatures, towards higher and lower temperature for T1 and T2, respectively. Moreover, the dimensionality reduction seems to also modify the microscopic nature of the T1 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 Fe3Ga4 in both bulk and nanostructured forms. The interesting microscopic tuning of the magnetic interactions induced by dimensionality in Fe3Ga4 opens a new route to optimize the use of such materials in nanostructured devices.
Editor: Nature Publishing Group
Citation: Scientific Reports. Nature Publishing Group, v. 6, p. , 2016.
Rights: aberto
Identifier DOI: 10.1038/srep28364
Address: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84975687432&partnerID=40&md5=2f2e3e1ca98170b3d4d7e1761526a9f0
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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