Effect of intermediate Layer at recording Layer/soft magnetic underlayer interface in perpendicular recording media observed by ferromagnetic Hall effect

• Published in: IEEE transactions on magnetics Vol. 40; no. 4; pp. 2464 - 2466
• Main Authors: Das, S., Sok-hyun Kong, Nakagawa, S.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.07.2004; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Hall effect; Magnetic anisotropy; Magnetic field measurement; Magnetic films; Magnetic properties; Magnetic properties and materials; Magnetism; Magnetization; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Physics; Soft magnetic materials; Voltage; Anomalous Hall effect; Magnetic materials; magnetic interaction; double-layered media; intermediate layer; ferromagnetic Hall effect
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2004.829278

Effect of the presence of a Pt intermediate layer (IL) between a 50-nm-thick CoCrPt recording layer (RL) and a 100-nm-thick NiFe soft magnetic under layer (SUL) has been studied using ferromagnetic Hall effect under the tilted magnetic field. CoCrPt RL with/without Pt IL between the RL and SUL revealed different inclination in the anomalous Hall voltage loop indicating the effect from the Ni-Fe SUL. Magnetic properties of the SUL, simultaneously detected from the Planar Hall voltage suggested the interaction effect between the CoCrPt RL and Ni-Fe SUL.