| Full text | |
| Author(s): |
Total Authors: 4
|
| Affiliation: | [1] Univ Fed Oeste Para, Santarem, PA - Brazil
[2] Univ Fed Para, Inst Ciencias Exatas & Nat, Belem, Para - Brazil
[3] Univ Sao Paulo, Inst Fis, Sao Paulo, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Journal of Magnetism and Magnetic Materials; v. 469, p. 108-112, JAN 1 2019. |
| Web of Science Citations: | 1 |
| Abstract | |
Polycrystalline NiMn2O4 samples were synthesized by sol-gel method at 500 degrees C (S500), 700 degrees C (S700), and 800 degrees C (S800). The three samples were then structurally characterized by X-ray diffraction and Rietveld refinement. Results indicate that samples are single phase and crystallize in the Fd (3) over barm space group with spinel structure. Williamson-Hall analysis shows that samples present different lattice strains. NiMn2O4 compounds show the magnetic transition from ferrimagnetic to paramagnetic at nearly 100 K. Hysteresis loops measured at T = 1.7 K after cooling the samples under magnetic field are asymmetric along the field axis. (AU) | |
| FAPESP's process: | 15/16191-5 - The research in new materials involving high magnetic fields and low temperatures |
| Grantee: | Gennady Gusev |
| Support Opportunities: | Research Projects - Thematic Grants |