Antiferromagnet IrMn thickness dependence in exchange-biased perpendicular magnetic anisotropy based on CoFe/Pt/CoFe/[IrMn(tIrMn)] multilayers |
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| Authors: | SS Lee JG Choi SW Kim JR Rhee DG Hwang |
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| Institution: | 1. Department of Computer and Electronic Physics, Sangji University, Wonju 220-702, South Korea;2. Department of Functional Electron and Materials, Graduation, Sangji University, Wonju 220-702, South Korea;3. Department of Physics, Sookmyung Women''s University, Seoul 140-742, South Korea |
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| Abstract: | The effect of the antiferromagnetic IrMn thickness upon the magnetic properties of CoFe/Pt/CoFe/IrMn(tIrMn)] multilayers is studied. An oscillatory interlayer coupling (IEC) has been shown in pinned CoFe/Pt(tPt)/CoFe/IrMn multilayers with perpendicular anisotropy. The period of oscillation corresponds to about 2 monolayers of Pt. The oscillatory behavior of IEC depends on the nonmagnetic metallic Pt thickness and is thought to be related to the antiferromagnetic ordering induced by the IrMn layer. From the extraordinary Hall voltage amplitude (EHA) curves as function of IrMn thickness, we report that the oscillation dependence of IEC for the CoFe/Pt/CoFe] multilayer system induced by IrMn with spacer-layer thickness is a important features of perpendicular exchange biased system. |
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| Keywords: | 75 30 Et 75 70 Ak |
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