Comparison of angular coercivity in various magnetic media (abstract)

Autor:	J.‐S. Gau, R. Ranjan, N. Amin
Rok vydání:	1990
Předmět:	Video recording Angular variation Materials science Nuclear magnetic resonance Condensed matter physics Magnetic media General Physics and Astronomy Peak location Coercivity Intergranular corrosion
Zdroj:	Journal of Applied Physics. 67:4713-4713
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.344810
Popis:	Angular coercivity provides a method for studying magnetization‐reversal mechanisms and has stimulated theoretical interests particularly for recording materials.1 This paper reports our experimental results on the angular variation of coercivity in different magnetic media prepared by various means, and compares these data. These include CoNiCr/Cr‐type longitudinal media and Ba‐ferrite–type particulate longitudinal media for hard‐disk applications, and CoNi‐type oblique evaporated longitudinal media for video recording. Results from sputtered CoNiCr/Cr media showed a symmetric M‐type curve and the peak height decreased with intergranular coupling.2 In addition, the peak position also changed systematically with grain decoupling. M‐type curves were also observed when the underlayer Cr thickness was varied, but the peak location remained unchanged. Results from Ba‐ferrite media prepared with different packing densities exhibit similar curves as those for CoNiCr/Cr media. However, oriented Ba‐ferrite media ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1acb615de8ef9200a83d2ef06b80486e https://doi.org/10.1063/1.344810 Zobrazit plný text záznamu