Control of Domain-Wall Injection Field with Different Nucleation Pad Geometry

Autor:	Kyoung-Woong Moon, Sung-Min Ahn, Cheong-Gu Cho, Sug-Bong Choe
Rok vydání:	2011
Předmět:	Materials science Nanostructure Magnetic structure Condensed matter physics Field (physics) Biomedical Engineering Nanowire Nucleation Bioengineering General Chemistry Condensed Matter Physics Magnetic field Condensed Matter::Materials Science Domain wall (magnetism) General Materials Science
Zdroj:	Journal of Nanoscience and Nanotechnology. 11:6476-6478
ISSN:	1533-4899 1533-4880
DOI:	10.1166/jnn.2011.4482
Popis:	It is experimentally reported herein that the injection field of domain walls (DWs) from the nucleation pad to the nanowire is controlled by the angle of the initializing magnetic field with the use of asymmetric sample structures. The injection field is abruptly varied twice between two distinct values at a certain angle. Micromagnetic simulation is used to model the injection of a DW into the nanowire with respect to the angle of the initializing magnetic field. This is ascribed to the different structure of the DW at the junction between the pad and the nanowire, resulting in the different pinning strength of the DW. These observations provide a way to control the injection field of DWs into nanostructures and give a possibility of the fast, reliable motion of the DW with field strengths less than the so-called Walker field on the nanowire by injecting the DW with a known magnetic structure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff50fa62b8039d926a8ae6c71baf52b5 https://doi.org/10.1166/jnn.2011.4482 Zobrazit plný text záznamu