The Effect of Residual La on Crystal Structure and Magnetic Properties of La1+Fe11.05Si1.95 Compounds
Main Article Content
Abstract
In this paper, we present the results of the study of the effect of residual La on crystal structure, magnetic properties of La1+dFe11.05Si1.95 (d = 0.00; 0.03; 0.06 and 0.09) compounds. The analysis of X-ray diffractions showed that when the La content increases to 9%, the structure still remains cubic in a typical NaZn13 arrangement with unchanged lattice constant (about 0.5%). All compounds exhibit ferromagnetic - paramagnetic phase transitions. The Curie temperature TC increases slightly from 235 to 245 K.
Keywords:
NaZn13-type cubic structure, Magnetocaloric materials
References
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[5] A. Fujita, K. Fukamichi, J.T. Wang, Y. Kawazoe, Large magnetovolume effects and band structure of itinerant-electron metamagnetic compounds, Phys. Rev. B 68 (2003) 104431. https://doi.org/10.1103/PhysRevB.68.104431.
[6] J. Lyubina, K. Nenkov, L. Schultz, O. Gutfleisch, Multiple Metamagnetic Transitions in the Magnetic Refrigerant Phys. Rev. Lett. 101 (2008) 177203. https://doi.org/10.1103/PhysRevLett.101.177203.
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[15] F. Wang, Y.F. Chen, G.J. Wang, B.G. Shen, The effect of Mn substitution in LaFe11.7Si1.3 compound on the magnetic properties and magnetic entropy changes, J. Phys. D: Appl. Phys. 36 (2003) 301-206. https://doi.org/10.1088/0022-3727/36/1/301.
[16] F.X. Hu, J. Gao, X.L. Qian, M. Ilyn, A.M. Tishin, J.R. Sun, B.G. Shen, Magnetocaloric effect in itinerant electron metamagnetic systems, J. Appl. Phys. 97 (2005) 10M303-305. https://doi.org/10.1063/1.1847071.
[17] D.T.K. Anh, N.P. Thuy, N.H. Duc, T.T. Nhien, N.V. Nong, Magnetism and magnetocaloric effect in La1−yNdy(Fe0.88Si0.12)13 compounds, J. Magn. Magn. Mater. 262 (2003) 427-431.https://doi.org/10.1016/S0304-8853(03)00073-8.
[18] Do Thi Kim Anh, Vuong Van Hiep, Makio Kurisu, Dinh Van Chau and Hoang Nam Nhat, Effect of Cerium Doping on Crystal Structure and Magnetic Properties of La1−yCeyFe11.44Si1.56 Compounds, Mat. Trans. 56(9) (2015) 1335-1338. https://doi.org/10.2320/matertrans.MA201518.
[19] Vuong Van Hiep, Nguyen Khac Thuan, Do Thi Kim Anh, and Hoang Nam Nhat, Crystal Structure and Magnetic Properties of La0.8R0.2(Fe0.88Si0.12)13 (R = Sm and Tb) Compounds, Mat. Trans. 59(7) (2018) 1068-1070. https://doi.org/10.2320/matertrans.MD201716.