TY - JOUR
T1 - Influence of la and Ce additions on the magnetocaloric effect of Fe-B-Cr-based amorphous alloys
AU - Law, J. Y.
AU - Franco, V.
AU - Ramanujan, R. V.
PY - 2011/5/9
Y1 - 2011/5/9
N2 - The magnetic entropy change (Δ SM), temperature of peak Δ SM (Tpk) and refrigerant capacity (RC) in Fe (RE)80 B12 Cr8 (RE=La, Ce, or Gd) alloys were studied. Increasing La, Ce, and Gd content led to relatively constant, decrease, and increase in Tpk, respectively. Both the phenomenologically constructed universal curve for Δ SM and field dependence power laws demonstrated that these alloys exhibited similar critical exponents at Curie temperature. With 5% Ce added to Fe80 B12 Cr 8, Tpk could be tuned near room temperature with relatively constant peak Δ SM. Fe79 B12 Cr8 La1 exhibited enhanced RC compared to Gd5 Si2 Ge1.9 Fe0.1. The tunable Tpk and enhanced RC are needed in active magnetic regenerators.
AB - The magnetic entropy change (Δ SM), temperature of peak Δ SM (Tpk) and refrigerant capacity (RC) in Fe (RE)80 B12 Cr8 (RE=La, Ce, or Gd) alloys were studied. Increasing La, Ce, and Gd content led to relatively constant, decrease, and increase in Tpk, respectively. Both the phenomenologically constructed universal curve for Δ SM and field dependence power laws demonstrated that these alloys exhibited similar critical exponents at Curie temperature. With 5% Ce added to Fe80 B12 Cr 8, Tpk could be tuned near room temperature with relatively constant peak Δ SM. Fe79 B12 Cr8 La1 exhibited enhanced RC compared to Gd5 Si2 Ge1.9 Fe0.1. The tunable Tpk and enhanced RC are needed in active magnetic regenerators.
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U2 - 10.1063/1.3589353
DO - 10.1063/1.3589353
M3 - Article
AN - SCOPUS:79959682722
SN - 0003-6951
VL - 98
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 19
M1 - 192503
ER -