Magnetic properties of nanostructured MuMetal (Ni0.77Fe0.16Cu0.05Cr0.02)
Nickel-Iron (Ni-Fe) based alloys exhibit low coercivity, high permeability and high saturation magnetization. They are of interest for their application as soft magnetic materials. Reducing their particles sizes to nano-scale is believed to enhance this properties. As such, nanocrystalline magnetic...
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| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2010
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| Online Access: | http://hdl.handle.net/10356/38627 |
| _version_ | 1826110330711834624 |
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| author | Poh, Choon Sian. |
| author2 | Oh Joo Tien |
| author_facet | Oh Joo Tien Poh, Choon Sian. |
| author_sort | Poh, Choon Sian. |
| collection | NTU |
| description | Nickel-Iron (Ni-Fe) based alloys exhibit low coercivity, high permeability and high saturation magnetization. They are of interest for their application as soft magnetic materials. Reducing their particles sizes to nano-scale is believed to enhance this properties. As such, nanocrystalline magnetic materials have wide ranging applications in magnetic recording devices, high power magnets, biomedical sciences and medical diagnostics.
In this study, nanocrystalline Mumetal (Ni0.77Fe0.16Cu0.05Cr0.02 alloy) powders were synthesized using planetary high-energy ball milling under argon atmosphere. The X-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM) were employed to study the alloy formation and corresponding magnetic properties as a function of milling time, ranging from 0h to 96h.
Complete formation of alloy phase, γ- (Fe, Ni, Cu, Cr) was observed after 12h of milling. The powder particles were refined to spherical shapes with increasing milling. In addition, decreasing crystallite size and increasing lattice parameter corresponded with increasing milling time. Likewise, results obtained from the VSM suggest that with increasing milling time, saturation magnetization increases and coercivity decreases. |
| first_indexed | 2024-10-01T02:32:38Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/38627 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:32:38Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | ntu-10356/386272023-03-04T15:35:17Z Magnetic properties of nanostructured MuMetal (Ni0.77Fe0.16Cu0.05Cr0.02) Poh, Choon Sian. Oh Joo Tien School of Materials Science and Engineering DRNTU::Engineering::Materials::Nanostructured materials DRNTU::Engineering::Materials::Magnetic materials DRNTU::Engineering::Materials::Material testing and characterization Nickel-Iron (Ni-Fe) based alloys exhibit low coercivity, high permeability and high saturation magnetization. They are of interest for their application as soft magnetic materials. Reducing their particles sizes to nano-scale is believed to enhance this properties. As such, nanocrystalline magnetic materials have wide ranging applications in magnetic recording devices, high power magnets, biomedical sciences and medical diagnostics. In this study, nanocrystalline Mumetal (Ni0.77Fe0.16Cu0.05Cr0.02 alloy) powders were synthesized using planetary high-energy ball milling under argon atmosphere. The X-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM) were employed to study the alloy formation and corresponding magnetic properties as a function of milling time, ranging from 0h to 96h. Complete formation of alloy phase, γ- (Fe, Ni, Cu, Cr) was observed after 12h of milling. The powder particles were refined to spherical shapes with increasing milling. In addition, decreasing crystallite size and increasing lattice parameter corresponded with increasing milling time. Likewise, results obtained from the VSM suggest that with increasing milling time, saturation magnetization increases and coercivity decreases. Bachelor of Engineering (Materials Engineering) 2010-05-14T00:36:54Z 2010-05-14T00:36:54Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/38627 en Nanyang Technological University 53 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Materials::Nanostructured materials DRNTU::Engineering::Materials::Magnetic materials DRNTU::Engineering::Materials::Material testing and characterization Poh, Choon Sian. Magnetic properties of nanostructured MuMetal (Ni0.77Fe0.16Cu0.05Cr0.02) |
| title | Magnetic properties of nanostructured MuMetal (Ni0.77Fe0.16Cu0.05Cr0.02) |
| title_full | Magnetic properties of nanostructured MuMetal (Ni0.77Fe0.16Cu0.05Cr0.02) |
| title_fullStr | Magnetic properties of nanostructured MuMetal (Ni0.77Fe0.16Cu0.05Cr0.02) |
| title_full_unstemmed | Magnetic properties of nanostructured MuMetal (Ni0.77Fe0.16Cu0.05Cr0.02) |
| title_short | Magnetic properties of nanostructured MuMetal (Ni0.77Fe0.16Cu0.05Cr0.02) |
| title_sort | magnetic properties of nanostructured mumetal ni0 77fe0 16cu0 05cr0 02 |
| topic | DRNTU::Engineering::Materials::Nanostructured materials DRNTU::Engineering::Materials::Magnetic materials DRNTU::Engineering::Materials::Material testing and characterization |
| url | http://hdl.handle.net/10356/38627 |
| work_keys_str_mv | AT pohchoonsian magneticpropertiesofnanostructuredmumetalni077fe016cu005cr002 |