Effect of copper ion distribution on the magnetization of nanoscaled NiZn ferrite
| Autor: | Syed A. M. Tofail, I.Z. Rahman, T.T. Ahmed |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Materials science
chemistry.chemical_element Condensed Matter Physics Copper Electronic Optical and Magnetic Materials law.invention Magnetization Nickel Crystallography Nuclear magnetic resonance chemistry X-ray photoelectron spectroscopy Octahedron Transition metal law Ferrite (magnet) Calcination |
| Zdroj: | Journal of Magnetism and Magnetic Materials. :2250-2252 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2003.12.648 |
| Popis: | The effect of copper substitution on the magnetic properties of Ni (0.8− x ) Zn 0.2 Cu x Fe 2 O 4 (where, x =0, 0.25, 0.42, 0.45, 0.5 and 0.55) calcined at 1000°C, were investigated. From XRD, a second phase, CuO had been found to exist beyond 0.42 mol fraction of Cu. High-resolution XPS in the Cu 2p 3/2 region showed an unequal distribution of Cu + and Cu 2+ cations in the tetrahedral and octahedral sites, which affected the dia-paramagnetic spin balance and caused the variation of overall spin and hence the magnetization. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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