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Research on the Structure of GdFeMn Compound
- Source :
- Advanced Materials Research; January 2017, Vol. 1142 Issue: 1 p14-18, 5p
- Publication Year :
- 2017
-
Abstract
- The crystal structure of GdFeMn alloy has been investigated by using X-ray powder diffraction (XRD) followed by Rietveld refinement technique, differential thermal analysis (DTA) and scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS) techniques. XRD results showed that annealed GdFeMn alloy was a single phase of Gd<subscript>6</subscript>(Fe<subscript>0.5</subscript>Mn<subscript>0.5</subscript>)<subscript>23</subscript> compound, with Th<subscript>6</subscript>Mn<subscript>23</subscript>-structure. SEM/EDS results and Rietveld refinement revealed that GdFeMn alloy was not really a new ternary compound as reported, but a solid solution Gd<subscript>6</subscript>(Fe<subscript>0.5</subscript>Mn<subscript>0.5</subscript>)<subscript>23</subscript> which was only a point between Gd<subscript>6</subscript>Fe<subscript>23</subscript> and Gd<subscript>6</subscript>Mn<subscript>23</subscript>. It was also found from DTA measurement that a reaction, Gd (Fe<subscript>0.5</subscript>Mn<subscript>0.5</subscript>)<subscript>2</subscript> → liquid (rich Gd) + Gd<subscript>6</subscript>(Fe<subscript>0.5</subscript>Mn<subscript>0.5</subscript>)<subscript>23</subscript>, had taken place above 650.81 <superscript>o</superscript>C, and the educed Gd existed in educed part of GdFeMn sample. The results demonstrated the real structure of the GdFeMn compound as reported was Gd<subscript>6</subscript>(Fe<subscript>0.5</subscript>Mn<subscript>0.5</subscript>)<subscript>23</subscript> compound.
Details
- Language :
- English
- ISSN :
- 10226680
- Volume :
- 1142
- Issue :
- 1
- Database :
- Supplemental Index
- Journal :
- Advanced Materials Research
- Publication Type :
- Periodical
- Accession number :
- ejs41197311
- Full Text :
- https://doi.org/10.4028/www.scientific.net/AMR.1142.14