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Magnetocaloric effect and the influence of pressure on magnetic properties of La-excess pseudo-binary alloys La1+δ
M. E. Gruner, W. Keune, B. Roldan Cuenya, C. Weis, J. Landers, S. I. Makarov, D. Klar, M. Y. Hu, E. E. Alp, J. Zhao, M. Krautz, O. Gutfleisch, and H. Wende, Phys. Rev. Lett. 114, 057202 (2015).
L. Jia, J. R. Sun, F. W. Wang, T. Y. Zhao, H. W. Zhang, B. G. Shen, D. X. Li, S. Nimori, Y. Ren, and Q. S. Zeng, Appl. Phys. Lett. 92, 101904 (2008).
H. H. Hamdeh, H. Al-Ghanem, W. M. Hikal, S. M. Taher, J. C. Ho, D. T. K. Anh, N. P. Thuy, N. H. Duc, and P. D. Thang, J. Magn. Magn. Mater. 269, 404 (2004).
X. Hou, P. Lampen-Kelley, Y. Xue, C. Liu, H. Xu, N. Han, C. Ma, H. Srikanth, and M.-H. Phan, J. Alloys Compd. 646, 503 (2015).
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The La-excess alloys La1+δ(Fe0.85Si0.15)13 (δ = 0.06 and 0.09) exhibit large magnetocaloric effect which has been attributed to the occurrence of itinerant-electron metamagnetic transition near the Curie temperature
C. The maximum entropy change −ΔS
m was shown to be from 4.5 to 11.5 J/kg K for the applied field variation ΔH from 20 to 70 kOe, respectively. The estimated relative cooling power for ΔH = 70 kOe was 418 J/kg. The alloys show a typical NaZn13-type cubic structure, featuring a doping-induced magnetovolume effect with the increase in T
C. Under the applied pressure up to 2 GPa, the T
C as deduced from resistance measurements decreased linearly, ΔT
C = 113 (for δ = 0.06) and 111 K (for δ = 0.09), together with a corresponding decrease of resistivity, Δρ = 6.1 μΩ m at room temperature for both samples. At a low pressure, the effect of spontaneous magnetostriction on T
C caused by applying the pressure appeared to have a similar magnitude to that of the negative magnetovolume effect caused by La-excess doping. In comparison with other stoichiometric La(Fe1−xSix)13 compounds, the pressure in our case was shown to have a smaller influence on T
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