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[Gd/Ti]n multilayers with different thicknesses of Gd layers ($L_{\mathbf{Gd}}$ ) have been prepared by magnetron sputtering. These multilayers exhibit second-order phase transitions at different temperatures, which are determined by $L_{\mathbf{Gd}}$ . The peak value of magnetic entropy change in Gd(300 nm) film is nearly two times smaller than the one of bulk Gd. The decrease of the $L_{\mathbf{Gd}}$ ...