KnE Materials Science
ISSN: 2519-1438
The latest conference proceedings on physical materials, energy materials, electrical materials.
Features of Magnetocaloric Effect in Er(Co-Fe)2 Laves Phases
Published date: Oct 12 2016
Journal Title: KnE Materials Science
Issue title: IV Sino-Russian ASRTU Symposium on Advanced Materials and Processing Technology (ASRTU)
Pages: 5-10
Authors:
Abstract:
In this work the results of measurements of heat capacity (CP) and magnetocaloric effect (MCE) in Er(Co1-хFeх)2 system in the concentration range 0.07 ≤ x ≤ 0.80 are presented. Phase composition was controlled by X-ray difraction analysis. Heat capacity was measured in the temperature range 77-320 K. MCE has been studied within the temperature range 5-670 K in magnetic fields up to 70 kOe. It was found that Fe concentration increase caused the table-like (plateau) MCE temperature dependence for both magnetic entropy change date and direct ∆T-effect measurements independently on Fe concentration. The possible reasons of such behavior are discussed.
References:
[1] A. Gschneidner Jr., V. K. Pecharsky, and A. O. Tsokol, Recent developments in magnetocaloric materials, Reports on Progress in Physics, 68, no. 6, 1479–1539, (2005).
[2] M. Anikin, E. Tarasov, N. Kudrevatykh, A. Inishev, A. Zinin, and A. Teplykh, Pirogov A: Magnetic structure and magnetocaloric properties of, Phys. Procedia, 75?, 1198–1206, (2015).
[3] M. I. Bartashevich, H. Aruga Katori, T. Goto, H. Wada, T. Maeda, T. Mori, and M. Shiga, Collapse of the itinerant Co moment in Er1-xLuxCo2 by the application of high magnetic fields, Physica B: Condensed Matter, 229, no. 3-4, 315–320, (1997).
[4] AV. Andreev, AV. Derjaguin, MS. Zadvorkin, and VN. Moskalev, Sinitsin EV: Influence of 3d-metal on the magnetic properties of quasi-binary intermetallic compounds of rare-earth Er(Fe1-xCox)2., Phys. Metals Metallogr, Phys. Metals Metallogr, 59, 481–488, (1985)., in Russian.
[5] X. B. Liu, Z. Altounian, and D. H. Ryan, Moment variation in Er (Co1-x Fex) 2 Laves phase: Magnetic measurements and Mössbauer spectroscopy study, Journal of Applied Physics, 105, no. 7, Article ID 07E119, (2009).
[6] E. Burzo, Magnetic properties and resonance studies of some pseudobinary gadolinium or yttrium compounds, J. Phys. Colloque, 40, C5–184, (1979).
[7] F. Pourarian, W. E. Wallace, and S. K. Malik, Magnetic behavior of Laves phase RCo2-xFex (R = Ho, Er) compounds and their hydrides, Journal of Magnetism and Magnetic Materials, 25, no. 3, 299–306, (1982).
[8] K. A. Gschneidner Jr. and V. K. Pecharsky, Magnetocaloric materials, Annual Review of Materials Science, 30, 387–429, (2000).
[9] E. Burzo, I. G. Pop, and D. N. Kozlenko, Magnetic and magnetocaloric properties of some ferrimagnetic compounds, Journal of Optoelectronics and Advanced Materials, 12, no. 5, 1105–1113, (2010).
[10] K. P. Belov, Ferrimagnets with a weak magnetic sublattice, Uspekhi Fizicheskikh Nauk, 166, no. 6, p. 681, (1996).
