Structural, electronic, and magnetic properties of CoFeVGe-based compounds: Experiment and theory
We have carried out a combined theoretical and experimental investigation of both stoichiometric and nonstoichiometric CoFeVGe alloys. In particular, we have investigated CoFeVGe, Co1.25Fe0.75VGe, Co0.75Fe1.25VGe, and CoFe0.75VGe bulk alloys. Our first principles calculations suggest that all four a...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2023-01-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/9.0000395 |
| _version_ | 1828042659933978624 |
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| author | Parashu Kharel Zachary Lehmann Gavin Baker Lukas Stuelke Shah Valloppilly Paul M. Shand Pavel V. Lukashev |
| author_facet | Parashu Kharel Zachary Lehmann Gavin Baker Lukas Stuelke Shah Valloppilly Paul M. Shand Pavel V. Lukashev |
| author_sort | Parashu Kharel |
| collection | DOAJ |
| description | We have carried out a combined theoretical and experimental investigation of both stoichiometric and nonstoichiometric CoFeVGe alloys. In particular, we have investigated CoFeVGe, Co1.25Fe0.75VGe, Co0.75Fe1.25VGe, and CoFe0.75VGe bulk alloys. Our first principles calculations suggest that all four alloys show ferromagnetic order, where CoFeVGe, Co1.25Fe0.75VGe, and Co0.75Fe1.25VGe are highly spin polarized with spin polarization values of over 80%. However, the spin polarization value of CoFe0.75VGe is only about 60%. We have synthesized all four samples using arc melting and high-vacuum annealing at 600 °C for 48 hours. The room temperature x-ray diffraction of these samples exhibits a cubic crystal structure with disorder. All the samples show single magnetic transitions at their Curie temperatures, where the Curie temperature and high field (3T) magnetization are 288 K and 42 emu/g; 305 K and 1.5 emu/g; 238 K and 39 emu/g; and 306 K and 35 emu/g for CoFeVGe, Co1.25Fe0.75VGe, Co0.75Fe1.25VGe, and CoFe0.75VGe, respectively. |
| first_indexed | 2024-04-10T17:33:50Z |
| format | Article |
| id | doaj.art-bc713321d7584a9a835d782cf243b2b0 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-10T17:33:50Z |
| publishDate | 2023-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-bc713321d7584a9a835d782cf243b2b02023-02-03T16:42:07ZengAIP Publishing LLCAIP Advances2158-32262023-01-01131015217015217-410.1063/9.0000395Structural, electronic, and magnetic properties of CoFeVGe-based compounds: Experiment and theoryParashu Kharel0Zachary Lehmann1Gavin Baker2Lukas Stuelke3Shah Valloppilly4Paul M. Shand5Pavel V. Lukashev6Department of Physics, South Dakota State University, Brookings, South Dakota 57007, USADepartment of Physics, South Dakota State University, Brookings, South Dakota 57007, USADepartment of Physics, South Dakota State University, Brookings, South Dakota 57007, USADepartment of Physics, University of Northern Iowa, Cedar Falls, Iowa 50614, USANebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588, USADepartment of Physics, University of Northern Iowa, Cedar Falls, Iowa 50614, USADepartment of Physics, University of Northern Iowa, Cedar Falls, Iowa 50614, USAWe have carried out a combined theoretical and experimental investigation of both stoichiometric and nonstoichiometric CoFeVGe alloys. In particular, we have investigated CoFeVGe, Co1.25Fe0.75VGe, Co0.75Fe1.25VGe, and CoFe0.75VGe bulk alloys. Our first principles calculations suggest that all four alloys show ferromagnetic order, where CoFeVGe, Co1.25Fe0.75VGe, and Co0.75Fe1.25VGe are highly spin polarized with spin polarization values of over 80%. However, the spin polarization value of CoFe0.75VGe is only about 60%. We have synthesized all four samples using arc melting and high-vacuum annealing at 600 °C for 48 hours. The room temperature x-ray diffraction of these samples exhibits a cubic crystal structure with disorder. All the samples show single magnetic transitions at their Curie temperatures, where the Curie temperature and high field (3T) magnetization are 288 K and 42 emu/g; 305 K and 1.5 emu/g; 238 K and 39 emu/g; and 306 K and 35 emu/g for CoFeVGe, Co1.25Fe0.75VGe, Co0.75Fe1.25VGe, and CoFe0.75VGe, respectively.http://dx.doi.org/10.1063/9.0000395 |
| spellingShingle | Parashu Kharel Zachary Lehmann Gavin Baker Lukas Stuelke Shah Valloppilly Paul M. Shand Pavel V. Lukashev Structural, electronic, and magnetic properties of CoFeVGe-based compounds: Experiment and theory AIP Advances |
| title | Structural, electronic, and magnetic properties of CoFeVGe-based compounds: Experiment and theory |
| title_full | Structural, electronic, and magnetic properties of CoFeVGe-based compounds: Experiment and theory |
| title_fullStr | Structural, electronic, and magnetic properties of CoFeVGe-based compounds: Experiment and theory |
| title_full_unstemmed | Structural, electronic, and magnetic properties of CoFeVGe-based compounds: Experiment and theory |
| title_short | Structural, electronic, and magnetic properties of CoFeVGe-based compounds: Experiment and theory |
| title_sort | structural electronic and magnetic properties of cofevge based compounds experiment and theory |
| url | http://dx.doi.org/10.1063/9.0000395 |
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