IIR document
The crystal structure and structural phase transformation in Gd(5)Si(1.8)Ge(1.8)Sn(0.4).
Author(s) : TANG Y. B., ZHANG T. B., CHEN Y. G., et al.
Summary
This MCE alloy was prepared by the arc-melt method. Based on the step-scanned high resolution powder X-ray diffraction data, the crystal structure of this alloy has been determined with the help of Rietveld refinement. the structure analysis indicates the T-T bond connecting Gd5T4 (T: Si, Ge, Sn) in this alloy is a little longer comparing with that of the Gd5Si2Ge2 alloy. Temperature dependent XRD indicates that Gd(5)Si(1.8)Ge(1.8)Sn(0.4) performs monoclinic-orthorhombic structural transition accompanying the magnetic transition near curie temperature. It is believed the first order magnetic-crystallographic transition could be triggered easily and the large magnetocaloric effect at a low magnetic field change is obtained in this alloy with Gd5Si2Ge2-type crystal structure.
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Details
- Original title: The crystal structure and structural phase transformation in Gd(5)Si(1.8)Ge(1.8)Sn(0.4).
- Record ID : 2011-0181
- Languages: English
- Source: 4th International Conference on Magnetic Refrigeration at Room Temperature (Thermag IV). Proceedings: Baotou, China, August 23-27, 2010.
- Publication date: 2010/08/23
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Indexing
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Themes:
Thermodynamic measurements;
Domestic applications (refrigerators, freezers);
Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling) - Keywords: Structure; Composite; Magnetic refrigerator; Magnetocaloric cooling; Temperature; Alloy; Magnetic property; Material; Magnetocaloric effect; Curie; Magnetic field
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- Formats : PDF
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