Effect of the buffer layer on the magnetic properties in CoFe/Pd multilayers

Bae, Jong Uk; Kim, Hyung jun; Chang, Joonyeon; Han, Suk Hee; Koo, Hyun Cheol; Lim, Sang Ho

doi:10.3938/jkps.61.1500

Cited by 6 publications

(1 citation statement)

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“…Many PMA multilayers have been studied such as Co base: Co/Pt [2,9], Co/Pd [10,11] and CoFe/Pd [12,13], CoPt and FePt [14,15], CoFeB/MgO [3,15,16]. Among these, CoFeB/Pd multilayers are more attractive because they exhibit high spin polarization [17] and moderate saturation magnetization [16], which are essential for reducing the current density required for spin switching.…”

Section: Introductionmentioning

confidence: 99%

MAGNETIC PROPERTIES AND DOMAIN STRUCTURE OF CoFeB/Pd MULTILAYERS WITH PERPENDICULAR MAGNETIC ANISOTROPY

Quach¹

2019

JST

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The magnetic properties and domain structure of (CoFeB/Pd) n (n = 2  10) multilayers prepared by DC magnetron sputtering with perpendicular magnetic anisotropy have been investigated systematically. The study has been carried out by using vibration sample magnetometer (VSM) and magneto-optical Kerr effect (MOKE) microscope. The results show clear changes of magnetic hysteresis and domain structure when increasing the number of bilayer (n) from 2 to 10. With increasing the number of bilayers, the multilayers' hysteresis loops change from square to slanted shape while domain structures change from circular-like to maze. The magnetization reversal changes from easy to be fully reversed with small n to hard to be fully reversed with large n. The behavior is explainable in term of pinning effect.

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