Reduced intergranular magnetic coupling in Pd/Co multilayers

Autor:	W. H. Liu, S. Fleming, B. M. Lairson
Rok vydání:	1996
Předmět:	Length scale Coupling (electronics) Condensed Matter::Materials Science Magnetization Crystallography Domain wall (magnetism) Materials science Condensed matter physics Magnetic domain General Physics and Astronomy Grain boundary Coercivity Inductive coupling
Zdroj:	Journal of Applied Physics. 79:3651-3655
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.361193
Popis:	The ideal magnetic switching mechanism for many types of data storage, including hard disk recording, is isolated domain coherent rotation. However, in typical Pd/Co multilayers with high coercivity, the dominant switching mechanism is domain wall motion, which causes noise in the readback signal. We have investigated the addition of elements, such as carbon, into Pd/Co multilayers to reduce the coupling between adjacent magnetic domains. This reduction of magnetic coupling reduces the length scale over which incoherent switching occurs. Kelly–Hankel plots and the switching radius ratio have been used to compare interactions and domain sizes of oxidized and carbon segregated Pd/Co multilayers. Both oxidation and carbon segregation reduce the coupling between domains, but the multilayers nevertheless remain more strongly coupled than perpendicular alloy films.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::355a93cb2bb86fdceb173a9f0cac4e26 https://doi.org/10.1063/1.361193 Zobrazit plný text záznamu