Abstract
Plated wire switching mechanisms were explored in the case of slowly applied external fields. The main parameter was the helical easy axis angle β <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">H</inf> of the Permalloy film. For axial wire (β <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">H</inf> = 0) the observed flux reversal proceeded from the ends of the wire toward the center, as shown by pulse timing at different sense coil locations. The pulse timing data were consistent with a transverse domain wall model. The experimentally determined wall mobility was 3×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sup> cm/s-Oe. Observed sense coil pulse characteristics agreed with values calculated from the wall motion model. For nonaxial wire, consistent wall motion phenomena were not observed, and for <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">\beta_{H}\geq20\deg</tex> the main flux reversal occurred simultaneously throughout the film. With increasing β <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">H</inf> , threshold fields approached those calculated for rotational switching. The relation of the results to switching applications is discussed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.