Abstract
A magnetic force microscope (MFM) study was carried out for two kinds of 8-mm video tape recorded sinusoidally at frequencies of 0.5 to 9 MHz. The observed MFM response decreased rapidly with increasing recording frequency except in the low-frequency range. To explain the result, two models of MFM tips were considered. One, the conventional point-dipole model, was unable to explain it. The other, which takes account of the real magnetic volume of the tip, showed a better fit. The models were also used to predict qualitatively the recording frequency dependence of the residual magnetization of the recorded tapes from the spacing-height-dependence data of the MFM response. The former showed an unreasonable frequency dependence of the residual magnetization, while the latter showed a reasonable dependence.
Sign-in/Register to access full text options 
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.
