Journal
IEEE TRANSACTIONS ON MAGNETICS
Volume 57, Issue 2, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2020.3012600
Keywords
Amorphous thin films; magnetic anisotropy; magneto-optical Kerr effect (MOKE); X-ray scattering
Funding
- UGC-DAE CSR, Indore
- Board of Research in Nuclear Sciences [37(3)/14/17/2015/BRNS]
- Department of Science and Technology, India
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Anomalous behavior of magnetic anisotropy in Co40Fe43B17 film sandwiched between Mo layers is observed during thermal annealing at different temperatures. The as-deposited amorphous film exhibits a uniaxial magnetic anisotropy due to quenched-in stresses. Anomalous magnetic reversal near the hard axis is observed in samples annealed at 350 degrees C and above, which can be explained by the distribution of easy magnetization direction evidenced by the ripple domain structure in Kerr microscopy images.
Anomalous behavior of magnetic anisotropy in Co40Fe43B17 film sandwiched between Mo layers has been observed as a function of thermal annealing at different temperatures. The as-deposited amorphous film exhibits a uniaxial magnetic anisotropy, the origin of which can be traced to quenched-in stresses. With thermal annealing up to 300 degrees C, anisotropy remains unchanged. We observe an anomalous magnetic reversal near the hard axis (HA) in the samples annealed at 350 degrees C and above. The anomaly of the occurrence of nonuniform magnetization near HA can he explained in terms of distribution of easy magnetization direction, as evidenced by the ripple domain structure in Kerr microscopy images.
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