| Full text | |
| Author(s): |
Annese, E.
[1, 2]
;
Mori, T. J. A.
[1]
;
Schio, P.
[1]
;
Bonfim, R. P. F.
[3]
;
Salles, B. Rache
[4]
;
Serna, J. D. Pena
[4]
;
Cezar, J. C.
[1]
Total Authors: 7
|
| Affiliation: | [1] Ctr Natl Pesquisa Energia & Mat, Lab Natl Luz Sincrotron, CP 6192, BR-13083970 Campinas, SP - Brazil
[2] Ctr Brasileiro Pesquisas Fis, Rua Dr Xavier Sigaud 150, BR-22290180 Rio De Janeiro - Brazil
[3] Univ Fed Rio de Janeiro, Programa Engn Quim, Rio De Janeiro - Brazil
[4] Univ Fed Rio de Janeiro, Inst Fis, Rio De Janeiro - Brazil
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Journal of Magnetism and Magnetic Materials; v. 507, AUG 1 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
Epitaxial La0.67Sr0.33MnO3 thin films play important roles in several applications due to their half-metallic conductivity and high spin polarization. Since these properties are very sensitive to minor structural changes arising from slightly different growing conditions it is important to understand their effect on the electronic and magnetic properties of the resulting samples. Here, we study two sets of La0.67Sr0.33MnO3 thin films, thicker (90 nm) and thinner (7 nm) ones, focusing on the influence of laser fluence and post-annealing oxygen partial pressure on their electronic structure and magnetism. Regardless of the preparation conditions, the thicker films present a tensile strain that leads to MnO6 octahedral deformation as detected by Raman active modes. The thinner films exhibit sizable in-plane magnetic anisotropy which depends on the sample preparation that leads to distinct surface morphology and electronic properties (Mn4+/Mn3+ ratio). (AU) | |
| FAPESP's process: | 15/12312-2 - Engineering organic molecular lms for spintronics applications |
| Grantee: | Júlio Criginski Cezar |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |
| FAPESP's process: | 12/51198-2 - Growth and characterization of the electronic structure of oxides multiferroics heterostructures |
| Grantee: | Júlio Criginski Cezar |
| Support Opportunities: | Research Grants - Young Investigators Grants |