| Autor: |
L. L. Ding, L. C. Xue, Z. Z. Li, S. Q. Li, G. D. Tang, W. H. Qi, L. Q. Wu, X. S. Ge |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
AIP Advances, Vol 6, Iss 10, Pp 105012-105012-23 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
2158-3226 |
| DOI: |
10.1063/1.4966253 |
| Popis: |
Powder samples of the ferrites MxMn1-xFe2O4 (M = Zn, Mg, Al) were prepared using a chemical co-precipitation method. X-ray diffraction analysis showed that the three series of samples had a single-phase cubic spinel structure and that there was a decrease in the lattice parameters with increasing x. There were different dependences on the doping level x of the magnetic moments ( μ exp ) for the three series of samples measured at 10 K. We found a non-monotonic behavior for μ exp as a function x for the Zn doped samples with a maximum at x = 0.4, while μ exp decreased monotonically with increasing x for the Mg and Al doped samples. On the basis of the O2p itinerant electron model, the magnetic moment direction of the Mn3+ cations is expected to be antiparallel to those of the Mn2+ and Fe cations in these samples. With this assumption, the curves of μ exp versus x for the three series of samples were fitted using a quantum-mechanical potential barrier model earlier proposed by our group, and the cation distributions were obtained. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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