Structural, Magnetic, Magnetocaloric and Mössbauer Spectrometry Study of $${\hbox {Gd}}_2{\hbox {Fe}}_{17-x}{\hbox {Cu}}_x$$ Gd 2 Fe 17 - x Cu x ( $$x=$$ x = 0, 0.5, 1 and 1.5) Compounds
| العنوان: | Structural, Magnetic, Magnetocaloric and Mössbauer Spectrometry Study of $${\hbox {Gd}}_2{\hbox {Fe}}_{17-x}{\hbox {Cu}}_x$$ Gd 2 Fe 17 - x Cu x ( $$x=$$ x = 0, 0.5, 1 and 1.5) Compounds |
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| المؤلفون: | Mohamed Saidi, Lotfi Bessais, E. Dhahri, S. Walha, M. Jemmali, K. Nouri, Ahlem Kabadou |
| المصدر: | Journal of Electronic Materials. 48:2242-2253 |
| بيانات النشر: | Springer Science and Business Media LLC, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | 010302 applied physics, Materials science, Rietveld refinement, chemistry.chemical_element, 02 engineering and technology, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Copper, Electronic, Optical and Magnetic Materials, Magnetization, Crystallography, Ferromagnetism, chemistry, 0103 physical sciences, Materials Chemistry, Magnetic refrigeration, Curie temperature, Electrical and Electronic Engineering, 0210 nano-technology, Mossbauer spectrometry, Solid solution |
| الوصف: | The structure, magnetic and magnetocaloric properties of arc-melted $${\hbox {Gd}}_2{\hbox {Fe}}_{17-x}{\hbox {Cu}}_x$$ ( $$x =$$ 0, 0.5, 1 and 1.5) solid solution have been studied. The Rietveld refinement shows that these compounds crystallize in the rhombohedral $${\hbox {Th}}_2{\hbox {Zn}}_{17}$$ -type structure with the $$R{\bar{3}}m$$ space group, and the substitution of iron by copper leads to a decrease in the unit cell volume. The Curie temperature ( $$T_{\mathrm{C}}$$ ) of the prepared samples depends on the copper content. The reduction of the ferromagnetic phase transition temperature from 475 K (for $$x = 0$$ ) to 460 K (for $$x = 1.5$$ ) is due to the substitution of the magnetic element (Fe) by non-magnetic atoms (Cu). The magnetocaloric effect was determined in the vicinity of the Curie temperature $$T_{\mathrm{C}}$$ . By increasing the Cu content, an increase in the values of magnetic entropy ( $$\Delta S_{\mathrm{M}}$$ ) in a low applied field is observed. The preferred inequivalent crystallographic site of Cu atoms was determined by Mossbauer spectrometry analysis based on the isomer shift parameter correlation with the Wigner–Seitz cell volumes. |
| تدمد: | 1543-186X 0361-5235 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::4229eba552579c54706a35bb12d20442 https://doi.org/10.1007/s11664-019-07027-7 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........4229eba552579c54706a35bb12d20442 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 1543186X 03615235 |
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