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The phases and magnetocaloric effect in the alloys (Gd1-xErx)5Si1.8Ge2.2 with x=0, 0.1, 0.2 and 0.3 were investigated by X-ray diffraction analysis and magnetization measurement. The samples were single phase with the monoclinic Gd5Si2Ge2-type structure. With the increase of Er content, the Curie temperature (Tc) decreased obviously from 253 K of the alloy with x=0 to 114 K with x=0.3. The maximum magnetic entropy changed in the samples of (Gd1-xErx)5Si1.8Ge2.2 with x=0.0, 0.1, 0.2 and 0.3 were 6.88, 8.32, 9.59 and 10.24 J·kg-1·K-1 respectively in the applied field change of 0～2.0 T.
The phases and magnetocaloric effect in the alloys (Gd1-xErx) 5Si1.8Ge2.2 with x = 0, 0.1, 0.2 and 0.3 were investigated by X-ray diffraction analysis and magnetization measurement. The samples were single phase with the monoclinic Gd5Si2Ge2- With the increase of Er content, the Curie temperature (Tc) decreased obviously from 253 K of the alloy with x = 0 to 114 K with x = 0.3. The maximum magnetic entropy changed in the samples of (Gd1-xErx) 5Si1.8Ge2.2 with x = 0.0, 0.1, 0.2 and 0.3 were 6.88, 8.32, 9.59 and 10.24 J · kg-1 · K-1 respectively.