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Observation of correlation between H-R loop and domain switching of MTJ cells employing magnetic force microscope (MFM)

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4 Author(s)
Jinhee Heo ; Sch. of Inf. & Commun. Eng., Sung Kyun Kwan Univ., Suwon, South Korea ; Seungbae Park ; Taewan Kirn ; Ilsub Chung

Dynamic domain switching utilizing MFM technique is attempted so that anomalous magnetic switching can be understood by correlating the hysteresis loop with the MFM images obtained under various external magnetic fields. The electrical properties of MTJ cells with H-R loop is measured and characterized. Various types of loops have different or asymmetric switching field. Also, a kink in the curve is found. The H-R loops correlated with MFM images show a domain changing behavior. Modified MFM with external magnetic field generator provides a reliable analyzing technique for MTJ cell characterization.

Published in:

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Date of Conference:

4-8 April 2005