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2008 | 113 | 1 | 347-350
Article title

Magnetic Phase Transitions and Thermal Properties of Ho(Co_{1-x}Si_x)_2 Compounds

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EN
Abstracts
EN
The specific heat of HoCo_2 and Ho(Co_{0.95}Si_{0.05})_2 was measured as a function of temperature in several constant magnetic fields up to 8 T. A data analysis allowed us to determine the isothermal entropy change and the magnetocaloric effect in a wide temperature range. The considerable values of the magnetocaloric effect in the vicinity of the magnetic ordering transition are qualifying both compounds as suitable for magnetic refrigeration purposes. The magnetic phase transition temperature (T_C) increases from 77 K for HoCo_2 to 103 K for Ho(Co_{0.95}Si_{0.05})_2 while the large magnetocaloric effect in the vicinity of TC is maintained, which demonstrates possible ways of tuning the operating temperatures of the magnetic refrigerant.
Keywords
EN
Publisher

Year
Volume
113
Issue
1
Pages
347-350
Physical description
Dates
published
2008-01
received
2007-07-09
Contributors
author
  • Department of Condensed Matter Physics, Charles University, Faculty of Mathematics and Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
author
  • Department of Condensed Matter Physics, Charles University, Faculty of Mathematics and Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
author
  • Department of Condensed Matter Physics, Charles University, Faculty of Mathematics and Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
References
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  • 5. M.W. Zemansky, Heat and Thermodynamics, McGraw-Hill, New York 1968
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  • 7. J. Inoue, M. Shimizu, J. Phys. F 12, 1811 (1982)
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  • 9. E. Gratz., G. Hilscher, H. Kirchmayr, H. Sassik, The Rare Earths in Science and Technology, Plenum, New York 1980, p. 327
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n1085kz
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