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Direct and indirect measurements of the magnetic and magnetocaloric properties of Ni0.895Cr0.105MnGe1.05 melt-spun ribbons in high magnetic fields

Journal Article · · Journal of Magnetism and Magnetic Materials
 [1];  [2];  [3];  [4];  [5];  [6];  [3];  [7];  [2];  [8];  [3]
  1. Southern Illinois Univ., Carbondale, IL (United States); OSTI
  2. Inst. of Low Temperature and Structure Research, Wroclaw (Poland)
  3. Southern Illinois Univ., Carbondale, IL (United States)
  4. Univ. Autónoma de Ciudad Juárez (UACJ) (Mexico)
  5. Inst. Potosino de Investigación Científica y Tecnológica, San Luis Potosí (Mexico)
  6. Lappeenranta Univ. of Technology (Finland)
  7. Lomonosov Moscow State Univ., Moscow (Russian Federation)
  8. Louisiana State Univ., Baton Rouge, LA (United States)
We report the magnetic and magnetocaloric properties of rapidly solidified Ni0.895Cr0.105MnGe1.05 melt-spun ribbons studied by both direct (adiabatic temperature change) and indirect (isothermal magnetic entropy change) methods in intermediate and high magnetic fields up to 10 T. The maximum values of the adiabatic temperature changes (ΔTad) and magnetic entropy changes ( Δ SM ) were found to be ~2.6 K (µoH = 10 T) and 4.4 J kg-1 K-1oΔH = 5 T), respectively, near the Curie temperature (TC). The ΔTad curves and magnetization isotherms were found to be completely reversible, which indicates the high degree of reversibility of the MCEs in this system. A large temperature span (of about 61 K) and a non-saturating behavior of ΔTad were observed at magnetic fields up to 10 T. The adiabatic temperature change was found to be a linear function of (µoH)2/3 near TC, in accordance with the Landau theory of phase transitions.
Research Organization:
Louisiana State Univ., Baton Rouge, LA (United States); Louisiana State University, Baton Rouge, LA (United States); Southern Illinois Univ., Carbondale, IL (United States); Southern Illinois University, Carbondale, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-06ER46291; SC0010521
OSTI ID:
1800356
Alternate ID(s):
OSTI ID: 1547176
OSTI ID: 1872889
Journal Information:
Journal of Magnetism and Magnetic Materials, Journal Name: Journal of Magnetism and Magnetic Materials Vol. 488; ISSN 0304-8853
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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