Magnetization Reversal and Direct Observation of Magnetic Domains on FePt Thin Films
In ferromagnetic thin films, the presence of an out-of-plane component of the magnetic anisotropy may induce a transition from planar to stripe-like magnetic domains above a critical thickness, t_{c} . Because of the changes in the domain structure, important changes in the magnetization reversal m...
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| Veröffentlicht in: | IEEE transactions on magnetics 2024-09, Vol.60 (9), p.1-5 |
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| creator | Roman, Augusto Gomez, Javier Butera, Alejandro Vavassori, Paolo Steren, Laura B. |
| description | In ferromagnetic thin films, the presence of an out-of-plane component of the magnetic anisotropy may induce a transition from planar to stripe-like magnetic domains above a critical thickness, t_{c} . Because of the changes in the domain structure, important changes in the magnetization reversal mechanisms are observed. We present the analysis of the magnetization reversal in FePt thin films, where this phenomenon is observed, through the experimental observation of magnetic domains by magnetooptic Kerr effect microscopy. The observed reversal mechanisms are strongly dependent on the thickness of the sample. For t\lt t_{c} , the reversal process is a combination of domain wall movement and rotation of domains. Meanwhile, for t\gt t_{c} , the stripe-domain structure determines the magnetization reversal. |
| doi_str_mv | 10.1109/TMAG.2024.3404874 |
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Because of the changes in the domain structure, important changes in the magnetization reversal mechanisms are observed. We present the analysis of the magnetization reversal in FePt thin films, where this phenomenon is observed, through the experimental observation of magnetic domains by magnetooptic Kerr effect microscopy. The observed reversal mechanisms are strongly dependent on the thickness of the sample. For <inline-formula> <tex-math notation="LaTeX">t\lt t_{c} </tex-math></inline-formula>, the reversal process is a combination of domain wall movement and rotation of domains. 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Because of the changes in the domain structure, important changes in the magnetization reversal mechanisms are observed. We present the analysis of the magnetization reversal in FePt thin films, where this phenomenon is observed, through the experimental observation of magnetic domains by magnetooptic Kerr effect microscopy. The observed reversal mechanisms are strongly dependent on the thickness of the sample. For <inline-formula> <tex-math notation="LaTeX">t\lt t_{c} </tex-math></inline-formula>, the reversal process is a combination of domain wall movement and rotation of domains. Meanwhile, for <inline-formula> <tex-math notation="LaTeX">t\gt t_{c} </tex-math></inline-formula>, the stripe-domain structure determines the magnetization reversal.]]></description><subject>Domain walls</subject><subject>Ferromagnetic materials</subject><subject>Intermetallic compounds</subject><subject>Iron compounds</subject><subject>Kerr magnetooptical effect</subject><subject>Magnetic anisotropy</subject><subject>Magnetic domains</subject><subject>Magnetic field measurement</subject><subject>Magnetic fields</subject><subject>magnetic films</subject><subject>Magnetic resonance imaging</subject><subject>Magnetization</subject><subject>Magnetization reversal</subject><subject>Platinum compounds</subject><subject>Thickness</subject><subject>Thin films</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpNkNtKAzEQhoMoWKsPIHgR8HrrZJM95LK0tgotFVmvlxxmNaXdrcm2oE9vSnshDMzp_2fgI-SewYgxkE_VcjwfpZCKERcgykJckAGTgiUAubwkAwBWJlLk4prchLCOrcgYDEi1VJ8t9u5X9a5r6Tse0Ae1oaq1dOo8mp6udEB_OO27hp4Nhk67rXJtoHE8w7eeVl8uVm6zDbfkqlGbgHfnPCQfs-dq8pIsVvPXyXiRmLSUfZJpqwvBUClr0EBpdM6KUkMhrc204HFttTaoGwYWS84Lk6eWGctUbnSGfEgeT3d3vvveY-jrdbf3bXxZc5CFTFmMqGInlfFdCB6beufdVvmfmkF9hFcf4dVHePUZXvQ8nDwOEf_pM14yAP4HOgxsgA</recordid><startdate>20240901</startdate><enddate>20240901</enddate><creator>Roman, Augusto</creator><creator>Gomez, Javier</creator><creator>Butera, Alejandro</creator><creator>Vavassori, Paolo</creator><creator>Steren, Laura B.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| subjects | Domain walls Ferromagnetic materials Intermetallic compounds Iron compounds Kerr magnetooptical effect Magnetic anisotropy Magnetic domains Magnetic field measurement Magnetic fields magnetic films Magnetic resonance imaging Magnetization Magnetization reversal Platinum compounds Thickness Thin films |
| title | Magnetization Reversal and Direct Observation of Magnetic Domains on FePt Thin Films |
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