DPG Phi
Verhandlungen
Verhandlungen
DPG

SKM 2021 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 11: Posters Magnetism III

MA 11.35: Poster

Mittwoch, 29. September 2021, 13:30–16:30, P

Magnetization switching of dipolar coupled elongated permalloy nanostructures of high shape anisotropyNeeti Keswani1, Yoshikata Nakajima2, Neha Chauhan2, Tomofumi Ukai2, Himadri Chakraborti3, Kantimoy Das Gupta3, Tatsuro Hanajiri2, Sakthi Kumar2, Yukio Ohno4, Hideo Ohno4, and •Pintu Das11Department of Physics, Indian Institute of Technology Delhi, New Delhi-110016 — 2Bio Nano Electronics Research Centre, Toyo University, Kawagoe, Saitama-3508585, Japan — 3Department of Physics, Indian Institute of Technology Bombay, Mumbai-400076 — 4Research Institute of Electrical Communications, Tohoku University, Sendai, Japan - 9808577

Behavior of nanomagnets of strong shape anisotropy can be studied by modelling them as Ising-like macrospins. Due to the potential use of such macrospin-like nanomagnets in devices such as in nanomagnetic logic etc., a detailed understanding of the exact switching behavior of such nanomagnets coupled via dipolar interaction is essential.

In this work, we have used 2-dimensional electron gas based micro-Hall magnetometry in ballistic transport regime to measure the stray fields emanating from the lithographically patterned elongated nanomagnets of Ni80Fe20 arranged in a double ring like structure. Our results demonstrate that although the magnetic images of the nanomagnets show single-domain behavior, however, their switching process may involve formation of other complex structures such as magnetic vortices, etc. The experimental results are analyzed by performing micro-magnetic simulations for the nanostructures.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2021 > SKM