Dynamic orientation ratio in longitudinal recording media

Autor:	C. H. Hee, H. B. Zhao, J. H. Yin, S. N. Piramanayagam, Yunjie Chen, J. Kasim, J. Zhang
Rok vydání:	2003
Předmět:	Stress (mechanics) Materials science Nuclear magnetic resonance Physics and Astronomy (miscellaneous) Condensed matter physics Spin dynamics Magnetic moment Orientation (computer vision) Thermal Magnetic films Recording media Metallic thin films
Zdroj:	Applied Physics Letters. 83:1175-1177
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.1599045
Popis:	The origin of orientation ratio (OR) in longitudinal recording media has been controversial in the literature. In the past, the observation of a higher OR for thinner magnetic films has been attributed to stress or thermal effects. Our measurements, carried out over a larger range of time scales, confirm that the thermal effects play a major role in the observation of a higher OR for thinner magnetic films. We point out that the OR is dynamic and follows a ln(t) behavior at larger time scales (5–1000 s). Our studies indicate that a larger OR and a more dynamic behavior of OR will be observed when KuV/kBT values are smaller. We also propose that the slope of dynamic OR can be used to compare the recording performance of media indirectly.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e9dbe9709fb6bda7c560629114639957 https://doi.org/10.1063/1.1599045 Zobrazit plný text záznamu