Display options
Cite
Moura KO, de Oliveira LAS, Rosa PFS, et al. Dimensionality tuning of the electronic structure in Fe3Ga4 magnetic materials. Sci Rep. 2016;6:28364doi: 10.1038/srep28364.
Moura, K. O., de Oliveira, L. A. S., Rosa, P. F. S., Jesus, C. B. R., Saleta, M. E., Granado, E., Béron, F., Pagliuso, P. G., & Pirota, K. R. (2016). Dimensionality tuning of the electronic structure in Fe3Ga4 magnetic materials. Scientific reports, 628364. https://doi.org/10.1038/srep28364
Moura, K O, et al. "Dimensionality tuning of the electronic structure in Fe3Ga4 magnetic materials." Scientific reports vol. 6 (2016): 28364. doi: https://doi.org/10.1038/srep28364
Moura KO, de Oliveira LAS, Rosa PFS, Jesus CBR, Saleta ME, Granado E, Béron F, Pagliuso PG, Pirota KR. Dimensionality tuning of the electronic structure in Fe3Ga4 magnetic materials. Sci Rep. 2016 Jun 22;6:28364. doi: 10.1038/srep28364. PMID: 27329581; PMCID: PMC4916602.
Copy Download .nbib Format: NLM
Share it on

Sci Rep. 2016 Jun 22;6:28364. doi: 10.1038/srep28364.

Dimensionality tuning of the electronic structure in Fe3Ga4 magnetic materials.

Scientific reports

K O Moura, L A S de Oliveira, P F S Rosa, C B R Jesus, M E Saleta, E Granado, F Béron, P G Pagliuso, K R Pirota

Affiliations

  1. Instituto de Física "Gleb Wataghin", Universidade Estadual de Campinas (UNICAMP), Campinas-SP, 13083-859, Brazil.
  2. Núcleo Multidisciplinar de Pesquisa, Universidade Federal do Rio de Janeiro (UFRJ) - Campus Xerém, Duque de Caixias-RJ, 25245-390, Brazil.
  3. Brazilian Synchrotron Light Laboratory (LNLS)/Brazilian Center of Energy and Materials (CNPEM), Campinas-SP, 13083-970, Brazil.

PMID: 27329581 PMCID: PMC4916602 DOI: 10.1038/srep28364

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.

References

  1. Nat Mater. 2005 May;4(5):366-77 - PubMed
  2. Nanoscale Res Lett. 2011 Jul 11;6:444 - PubMed
  3. Phys Rev B Condens Matter. 1993 Oct 1;48(14):10221-10226 - PubMed
  4. Nat Mater. 2006 Sep;5(9):741-7 - PubMed
  5. Nature. 2002 Feb 7;415(6872):617-20 - PubMed

Publication Types