Magnetic moments of Ti cations in Ti-doped Ni0.68Fe2.32O4 spinel ferrites
| Autor: | W. H. Qi, J. Xu, Z.F. Shang, X.Y. Zhang, Z.Z. Li, Guide Tang, D.H. Ji |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Magnetic moment Mechanical Engineering Transition temperature Doping Metallurgy Spinel Metals and Alloys Analytical chemistry engineering.material Condensed Matter::Materials Science Magnetization Mechanics of Materials Condensed Matter::Superconductivity visual_art Materials Chemistry visual_art.visual_art_medium engineering Ferrite (magnet) Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Ceramic |
| Zdroj: | Journal of Alloys and Compounds. 619:228-234 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2014.08.252 |
| Popis: | Two series of Ti doped Ni0.68Fe2.32O4 ferrite samples with a single cubic spinel phase were prepared using conventional ceramic methods. A transition temperature, TN, was found when the Ti doping level was x > 0.15, below which temperature the magnetization of the samples abruptly decreased with decreasing measurement temperature rather than rising or remaining nearly constant as in samples with less doping. It was found that TN increased with increasing applied magnetic field. These phenomena indicated that with Ti doping an additional antiferromagnetic structure arises in the traditional spinel phase of ferrites and therefore that Ti ions have magnetic moments rather than as Ti4+ cations which has zero moment. |
| Databáze: | OpenAIRE |
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