PL EN


Preferences help
enabled [disable] Abstract
Number of results
2015 | 127 | 2 | 644-646
Article title

A Comparative Studies of Magnetocaloric Effect in Ni-Mn-Cu-Ga and Ni-Mn-Pb-Ga Alloys

Content
Title variants
Languages of publication
EN
Abstracts
EN
Effect of Pb substitution for Cu on magnetocaloric properties of Ni₂Mn_{1-x}Cu_xGa (x = 0.25, 0.27, 0.29) alloy was investigated experimentally. The magnetic measurements of Ni-Mn-Pb-Ga alloys conducted at low field of 4kA/m (50 Oe) showed that their Curie points are above the room temperature (RT). The analysis of isothermal magnetic curves allowed the estimation of magnetic entropy change (ΔS_{M}). The highest calculated value of |ΔS_{M}|, ≈ 12 J/(kgK) and ≈ 1.8 J/(kgK), was registered for alloys containing 6.25 at.% of Cu and 6.75 at.% of Pb, respectively. The adiabatic temperature changes (ΔT) measured near RT are ≈ 0.4 K.
Keywords
EN
Year
Volume
127
Issue
2
Pages
644-646
Physical description
Dates
published
2015-02
References
  • [1] A. M. Tishin, in: Handbook of magnetic materials, vol. 12, Ed. K.H.J. Buschow, Elsevier Science, Amsterdam 1999, p. 395, doi: 10.1016/S1567-2719(99)12008-0
  • [2] P. Weiss, A. Piccard,J. Phys. Theor. Appl. 7, 103 (1917), doi: 10.1051/jphystap:019170070010300
  • [3] V. K. Pecharsky, K. A. Gschneidner Jr., Phys. Rev. Lett. 78, 4494 (1997), doi: 10.1103/PhysRevLett.78.4494
  • [4] R. Wróblewski, K. Sielicki, M. Leonowicz, Inżynieria Materiałowa 31, 284 (2010) (in Polish)
  • [5] L. Pareti, M. Solzi, F. Albertini, A. Paoluzi, Eur. Phys. J. B 32, 303 (2003), doi: 10.1140/epjb/e2003-00102-y
  • [6] S. Stadler, M. Khan, J. Mitchell, N. Ali, A. M. Gomes, I. Dubenko, A. Y. Takeuchi, A. P. Guimaraes, Appl. Phys. Lett. 88, 192511 (2006), doi: 10.1063/1.2202751
  • [7] M. Khan, I. Dubenko, S. Stadler, N. Ali, J. Appl. Phys. 97, 10M304 (2005), doi: 10.1063/1.1847131
  • [8] J. Kübler, A.R. William, C.B. Sommers,Phys. Rev. B 28, 1745 (1983), doi: 10.1103/PhysRevB.28.1745
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv127n2159kz
Identifiers
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.