Elimination of Mn3Ga with Low Crystal Symmetry in Alloying Mn-Ga by Ge Addition
In this paper, milling was investigated as a method for production of Mn-Ga binary alloys and the effect of milling process on phase formation of Mn:Ga samples with 2:1 and 3:1 ratio within 1, 2 and 5 hour milling times was studied. For Mn:Ga samples, according to the results, Mn1.86Ga compound with...
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| Format: | Article |
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Isfahan University of Technology
2016-09-01
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| Series: | Journal of Advanced Materials in Engineering |
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| Online Access: | http://jame.iut.ac.ir/article-1-818-en.html |
| _version_ | 1818916083049955328 |
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| author | F. Nazari M. Hakimi H. Mokhtari A.S. Esmaeily |
| author_facet | F. Nazari M. Hakimi H. Mokhtari A.S. Esmaeily |
| author_sort | F. Nazari |
| collection | DOAJ |
| description | In this paper, milling was investigated as a method for production of Mn-Ga binary alloys and the effect of milling process on phase formation of Mn:Ga samples with 2:1 and 3:1 ratio within 1, 2 and 5 hour milling times was studied. For Mn:Ga samples, according to the results, Mn1.86Ga compound with tetragonal structure and I4/mmm space group was a stable phase. Also, some amounts of Mn3Ga compound with orthorhombic structure and Cmca space group was observed in the Mn:Ga solution. The effect of Ge addition, with the purpose of replacing Ge with Ga was also studied in Mn:Ga:Ge (3:0.5:0.5) sample. Although improved magnetic properties is expected with the addition of Ge, but increasing the coercivity was occurred, and saturation magnetization did not change significantly in the studied sample. Ge addition caused elimination of the possibility of formation of asymmetric orthorhombic Mn3Ga phase. In return, two new structures of Mn11Ge8 and MnGaGe were appeared. This phase change was confirmed by studying magnetic behaviour of samples. This behavior can be caused by unbalanced electrostatic forces resulting from Mn-Mn exchange interaction in Mn3Ga orthorhombic structure and substitution of some Ge atoms with Ga. |
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| format | Article |
| id | doaj.art-7c9334871ae14e70b44b15c55de2dcd5 |
| institution | Directory Open Access Journal |
| issn | 2251-600X 2423-5733 |
| language | fas |
| last_indexed | 2024-12-20T00:12:32Z |
| publishDate | 2016-09-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Advanced Materials in Engineering |
| spelling | doaj.art-7c9334871ae14e70b44b15c55de2dcd52022-12-21T20:00:27ZfasIsfahan University of TechnologyJournal of Advanced Materials in Engineering2251-600X2423-57332016-09-013525565Elimination of Mn3Ga with Low Crystal Symmetry in Alloying Mn-Ga by Ge AdditionF. Nazari0M. Hakimi1H. Mokhtari2A.S. Esmaeily3 1- Department of Physics, Yazd University, Yazd, Iran 1- Department of Physics, Yazd University, Yazd, Iran 1- Department of Physics, Yazd University, Yazd, Iran 2- School of Physics and CRANN, Trinity College, Dublin 2, Ireland In this paper, milling was investigated as a method for production of Mn-Ga binary alloys and the effect of milling process on phase formation of Mn:Ga samples with 2:1 and 3:1 ratio within 1, 2 and 5 hour milling times was studied. For Mn:Ga samples, according to the results, Mn1.86Ga compound with tetragonal structure and I4/mmm space group was a stable phase. Also, some amounts of Mn3Ga compound with orthorhombic structure and Cmca space group was observed in the Mn:Ga solution. The effect of Ge addition, with the purpose of replacing Ge with Ga was also studied in Mn:Ga:Ge (3:0.5:0.5) sample. Although improved magnetic properties is expected with the addition of Ge, but increasing the coercivity was occurred, and saturation magnetization did not change significantly in the studied sample. Ge addition caused elimination of the possibility of formation of asymmetric orthorhombic Mn3Ga phase. In return, two new structures of Mn11Ge8 and MnGaGe were appeared. This phase change was confirmed by studying magnetic behaviour of samples. This behavior can be caused by unbalanced electrostatic forces resulting from Mn-Mn exchange interaction in Mn3Ga orthorhombic structure and substitution of some Ge atoms with Ga.http://jame.iut.ac.ir/article-1-818-en.htmlmillingcrystal structuremagnetic propertiesmngage |
| spellingShingle | F. Nazari M. Hakimi H. Mokhtari A.S. Esmaeily Elimination of Mn3Ga with Low Crystal Symmetry in Alloying Mn-Ga by Ge Addition Journal of Advanced Materials in Engineering milling crystal structure magnetic properties mn ga ge |
| title | Elimination of Mn3Ga with Low Crystal Symmetry in Alloying Mn-Ga by Ge Addition |
| title_full | Elimination of Mn3Ga with Low Crystal Symmetry in Alloying Mn-Ga by Ge Addition |
| title_fullStr | Elimination of Mn3Ga with Low Crystal Symmetry in Alloying Mn-Ga by Ge Addition |
| title_full_unstemmed | Elimination of Mn3Ga with Low Crystal Symmetry in Alloying Mn-Ga by Ge Addition |
| title_short | Elimination of Mn3Ga with Low Crystal Symmetry in Alloying Mn-Ga by Ge Addition |
| title_sort | elimination of mn3ga with low crystal symmetry in alloying mn ga by ge addition |
| topic | milling crystal structure magnetic properties mn ga ge |
| url | http://jame.iut.ac.ir/article-1-818-en.html |
| work_keys_str_mv | AT fnazari eliminationofmn3gawithlowcrystalsymmetryinalloyingmngabygeaddition AT mhakimi eliminationofmn3gawithlowcrystalsymmetryinalloyingmngabygeaddition AT hmokhtari eliminationofmn3gawithlowcrystalsymmetryinalloyingmngabygeaddition AT asesmaeily eliminationofmn3gawithlowcrystalsymmetryinalloyingmngabygeaddition |