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Giant Magnetic entropy-∆S(J/kg.K)282624222018161412108642LaFe11.7Si1.3H=1-5T0160 170 180 190 200 210 220 230-∆S(J/kg.K)4.03.53.02.52.01.51.00.50.0H=1-2T180 200 220 240 260 280 300T(K)T(K)Two phenomena should been explainedï Larger magnetic entropy change in lower Si concentrationï|∆S| peak broadens asymmetrically to higher temperature