Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 433, Issue 1-2, Pages 18-21Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2006.06.056
Keywords
phase formation; thermal hysteresis; magnetocaloric effect
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The Gd5Si2Ge2 and Gd5Si2Ge1.9T0.1 (T: Mn, Fe, Co, Ni) series alloys have been prepared by arc-melting method and annealed at 1300 degrees C for an hour. The phase formation and thermal hysteresis of the experimental alloys have been examined with the help of powder X-ray diffraction and optical metallographic combined with magnetic measurement. From XRD results, the alloy with the addition of Fe or Co is inclined to form the mixed Gd5Si4-type and Gd5SiGe2-type phase. Transition elements Mn and Ni result in the orthorhombic Gd5Si4-tYPe phase formation in Gd5Si2Ge1.9T0.1 (T: Mn, Ni) alloys. Magnetic measurement shows that all the four experimental transition elements could reduce the thermal hysteresis of Gd5Si2Ge2. (c) 2006 Elsevier B.V. All rights reserved.
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