Effect of remanent magnetization on exchange biasing in [Pd/Co]×5/FeMn films

• Published in: Journal of magnetism and magnetic materials Vol. 310; no. 2; pp. 2304 - 2306
• Main Authors: Choi, S.D., Kim, S.W., Joo, H.W., Lee, K.A., Lee, S.S., Hwang, D.G.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2007
• Subjects: [Pd/Co] multilayers; Exchange-biasing field; Perpendicular magnetic anisotropy; Remanent magnetization; 71.70.Gm; [Pd/Co] multilayers; Remanent magnetization; Perpendicular magnetic anisotropy; 75.70.Cn; Exchange-biasing field
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2006.10.1039

The effect of remanent magnetization, which is defined as the initial state of magnetization before FeMn pinning, on exchange biasing in [Pd/Co]×5/FeMn multilayers with perpendicular magnetic anisotropy was investigated. As the Co thickness increases from 0.23 to 0.55 nm in [Pd(0.6 nm)/Co]×5 multilayers, the remanent magnetization M rm values of as-deposited samples decrease from maximum magnetization M s to almost zero due to the weakened perpendicular anisotropy. After the [Pd/Co]×5 multilayers were pinned by FeMn layer, the magnetization curve and perpendicular exchange-biasing field H eb become strongly related to the remanent magnetization.