Abstract
A near-field scanning microwave microprobe (NSMM) technique has been used to investigate the magnetic properties of the Permalloy (Ni 81Fe 19) thin film. To characterize the hysteresis behavior of the magnetoresistance (MR) of Permalloy (Py) thin films, the microwave reflection coefficient, S 11 was measured. The change of the estimated MR was observed under in-plane external magnetic fields, and was confirmed with variation of MR measured by the 4-probe method. The magnetic properties of the Py thin film were examined by a vibrating sample magnetometer. The observed MR was correlated with the changes of the relative magnetic permeability, Δ μ of the Py. We also directly imaged the Py thin film changes by NSMM. MR of Py was determined from the visualized microwave reflection coefficient changes Δ S 11 at the thin film interface with high sensitivity. The present methodology can be extended to investigations of other magnetic thin films or magnetic materials using the NSMM system.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
