Back to Search Start Over

Research on the Structure of GdFeMn Compound

Authors :
Zhao, Shi Qian
Ma, Lei
Zhou, Liang
Liu, Tao
Guo, Yong Bin
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