Effect of interlayer exchange coupling on magnetization reversal process in ECC media with high coercivity

Oyama, A.; Komine, Takashi; Sugita, R.

doi:10.1051/epjconf/20134007003

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2014

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“…of the soft layer is reversed during applying the H a , magnetization in the hard layer hardly changes as shown in Figs. 5,6. Namely the magnetization of each layer is independently reversed.…”

Section: Calculation Methodsmentioning

confidence: 99%

Effect of layer thickness ratio on magnetization reversal process in stacked media with high coercivity

Oyama

Sugita

2014

EPJ Web of Conferences

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Abstract. Effect of thickness ratio and interlayer exchange coupling on time-evolutional magnetization reversal process in stacked media with high coercivity was investigated by utilizing micromagnetic simulation. Regardless of the layer thickness ratio, for each stacked medium the magnetization reversal process is divided into three regions, namely the spin-flop rotation, the incoherent rotation and the coherent rotation along with increase of the interlayer exchange coupling constant A interlayer . In order to get the incoherent rotation region which is suitable for the recording media, it is required that the A interlayer is between about 1.3×10 -7 and 2.2×10 -7erg/cm for the media with the layer thickness ratio of 1 : 3 and 3 : 1, and that one is between about 1.8×10 -7 and 2.5×10 -7 erg/cm for the media with the ratio near 1 : 1.

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Section: Calculation Methodsmentioning

confidence: 99%