The Effect of Substitution of Mn by Pd on the Structure and Thermomagnetic Properties of the Mn<sub>1−x</sub>Pd<sub>x</sub>CoGe Alloys (Where x = 0.03, 0.05, 0.07 and 0.1)
In the present paper, the influence of partial substitution of Mn by Pd on structure, thermomagnetic properties, and phase transitions in the MnCoGe alloys was investigated. The studies of phase constitution revealed an occurrence of the orthorhombic TiNiSi-type and hexagonal Ni<sub>2</sub&...
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| author | Karolina Kutynia Anna Przybył Piotr Gębara |
| author_facet | Karolina Kutynia Anna Przybył Piotr Gębara |
| author_sort | Karolina Kutynia |
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| description | In the present paper, the influence of partial substitution of Mn by Pd on structure, thermomagnetic properties, and phase transitions in the MnCoGe alloys was investigated. The studies of phase constitution revealed an occurrence of the orthorhombic TiNiSi-type and hexagonal Ni<sub>2</sub>Ti- type phases. Deep analysis of the XRD pattern supported by the Rietveld analysis allowed us to notice the changes in lattice parameters and quantity of recognized phases depending on the Pd content. An increase of palladium in alloy composition at the expense of manganese induced a rise in the Curie temperature. The values of ΔS<sub>M</sub> measured for the variation of external magnetic field ~5 T equaled 8.88, 23.99, 15.63, and 11.09 for Mn<sub>0.97</sub>Pd<sub>0.03</sub>CoGe, Mn<sub>0.95</sub>Pd<sub>0.05</sub>CoGe, Mn<sub>0.93</sub>Pd<sub>0.07</sub>CoGe, and Mn<sub>0.9</sub>Pd<sub>0.1</sub>CoGe alloy, respectively. The highest magnetic entropy change ΔS<sub>M</sub> was observed for samples with Pd content x = 0.05 induced by magnetostructural transformation. The analysis of the <i>n</i> vs. <i>T</i> curves allowed confirmation of the XRD and DSC results of an occurrence of the first-order magnetostructural transition in Mn<sub>0.95</sub>Pd<sub>0.05</sub>CoGe and Mn<sub>0.93</sub>Pd<sub>0.07</sub>CoGe alloys samples. |
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| spelling | doaj.art-cfa7757b20424565b31f8f4ef75a65c62023-11-18T23:12:44ZengMDPI AGMaterials1996-19442023-07-011615539410.3390/ma16155394The Effect of Substitution of Mn by Pd on the Structure and Thermomagnetic Properties of the Mn<sub>1−x</sub>Pd<sub>x</sub>CoGe Alloys (Where x = 0.03, 0.05, 0.07 and 0.1)Karolina Kutynia0Anna Przybył1Piotr Gębara2Department of Physics, Częstochowa University of Technology, Armii Krajowej 19, 42-200 Częstochowa, PolandDepartment of Physics, Częstochowa University of Technology, Armii Krajowej 19, 42-200 Częstochowa, PolandDepartment of Physics, Częstochowa University of Technology, Armii Krajowej 19, 42-200 Częstochowa, PolandIn the present paper, the influence of partial substitution of Mn by Pd on structure, thermomagnetic properties, and phase transitions in the MnCoGe alloys was investigated. The studies of phase constitution revealed an occurrence of the orthorhombic TiNiSi-type and hexagonal Ni<sub>2</sub>Ti- type phases. Deep analysis of the XRD pattern supported by the Rietveld analysis allowed us to notice the changes in lattice parameters and quantity of recognized phases depending on the Pd content. An increase of palladium in alloy composition at the expense of manganese induced a rise in the Curie temperature. The values of ΔS<sub>M</sub> measured for the variation of external magnetic field ~5 T equaled 8.88, 23.99, 15.63, and 11.09 for Mn<sub>0.97</sub>Pd<sub>0.03</sub>CoGe, Mn<sub>0.95</sub>Pd<sub>0.05</sub>CoGe, Mn<sub>0.93</sub>Pd<sub>0.07</sub>CoGe, and Mn<sub>0.9</sub>Pd<sub>0.1</sub>CoGe alloy, respectively. The highest magnetic entropy change ΔS<sub>M</sub> was observed for samples with Pd content x = 0.05 induced by magnetostructural transformation. The analysis of the <i>n</i> vs. <i>T</i> curves allowed confirmation of the XRD and DSC results of an occurrence of the first-order magnetostructural transition in Mn<sub>0.95</sub>Pd<sub>0.05</sub>CoGe and Mn<sub>0.93</sub>Pd<sub>0.07</sub>CoGe alloys samples.https://www.mdpi.com/1996-1944/16/15/5394X-ray diffractionDSC measurementsmicrostructuremagnetocaloric effect |
| spellingShingle | Karolina Kutynia Anna Przybył Piotr Gębara The Effect of Substitution of Mn by Pd on the Structure and Thermomagnetic Properties of the Mn<sub>1−x</sub>Pd<sub>x</sub>CoGe Alloys (Where x = 0.03, 0.05, 0.07 and 0.1) Materials X-ray diffraction DSC measurements microstructure magnetocaloric effect |
| title | The Effect of Substitution of Mn by Pd on the Structure and Thermomagnetic Properties of the Mn<sub>1−x</sub>Pd<sub>x</sub>CoGe Alloys (Where x = 0.03, 0.05, 0.07 and 0.1) |
| title_full | The Effect of Substitution of Mn by Pd on the Structure and Thermomagnetic Properties of the Mn<sub>1−x</sub>Pd<sub>x</sub>CoGe Alloys (Where x = 0.03, 0.05, 0.07 and 0.1) |
| title_fullStr | The Effect of Substitution of Mn by Pd on the Structure and Thermomagnetic Properties of the Mn<sub>1−x</sub>Pd<sub>x</sub>CoGe Alloys (Where x = 0.03, 0.05, 0.07 and 0.1) |
| title_full_unstemmed | The Effect of Substitution of Mn by Pd on the Structure and Thermomagnetic Properties of the Mn<sub>1−x</sub>Pd<sub>x</sub>CoGe Alloys (Where x = 0.03, 0.05, 0.07 and 0.1) |
| title_short | The Effect of Substitution of Mn by Pd on the Structure and Thermomagnetic Properties of the Mn<sub>1−x</sub>Pd<sub>x</sub>CoGe Alloys (Where x = 0.03, 0.05, 0.07 and 0.1) |
| title_sort | effect of substitution of mn by pd on the structure and thermomagnetic properties of the mn sub 1 x sub pd sub x sub coge alloys where x 0 03 0 05 0 07 and 0 1 |
| topic | X-ray diffraction DSC measurements microstructure magnetocaloric effect |
| url | https://www.mdpi.com/1996-1944/16/15/5394 |
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