Effect of Fe substitution on magnetic properties of antiferromagnetic Heusler alloy Ru2MnGe
| Autor: | Hiroaki Samata, Y. Noro, S. Mizusaki, Tadashi C. Ozawa, T. Ohnishi, Y. Nagata, A. Douzono |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Magnetoresistance Ferromagnetic material properties Condensed matter physics Magnetism Mechanical Engineering Metals and Alloys Coercivity Condensed Matter::Materials Science Ferromagnetism Mechanics of Materials Materials Chemistry Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Crystallite Anisotropy |
| Zdroj: | Journal of Alloys and Compounds. 510:141-146 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2011.09.017 |
| Popis: | The present study reveals that the correlation between the magnetic properties with composition x in the polycrystalline Ru2Mn1−xFexGe system. Hard ferromagnetic properties appeared at the intermediate composition between antiferromagnetic Ru2MnGe with soft ferromagnetic Ru2FeGe. Ru2Mn0.6Fe0.4Ge shows an anisotropic and negative magnetoresistance (MR) effect more than 8% although the both end materials are small MR effect less than 1%. These experimental results correlate the variation in MR ratio with that of coercive field as a function of x. Moreover, the correlation is shown at the boundary of magnetism between antiferromagnetic and ferromagnetic. Therefore, the present experimental results imply that the coexistence of antiferromagnetic and soft ferromagnetic leads to induce the MR effect in this system. |
| Databáze: | OpenAIRE |
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