High coercive field in TbFe/Fe/TbFe exchange-coupled system with mixed magnetic anisotropy
Source abstract
Abstract
In this article, the structural, magnetic, and microscopic properties of exchange-coupled TbFe/Fe/TbFe system are presented. Both TbFe layers exhibit out-of-plane magnetization, and Fe spacer layer ((S_{hbox {F}})) has in-plane magnetization, whereas the entire exchange-coupled system shows considerable enhancement in magnetic properties. By increasing the thickness of (S_{hbox {F}}) from 2 to 20 nm, the out-of-plane coercive field and saturation magnetization get enhanced by more than thrice. Perpendicular anisotropy gets tailored as the thickness of (S_{hbox {F}}) increases, which also affects the microscopic magnetic domains. Maze-like magnetic domains have been observed at (S_{hbox {F}}) = 2 nm; however, domains get diffused and agglomerated upon further increment in thickness of (S_{hbox {F}}). In addition, tilt in effective anisotropy has been achieved in the presence of (S_{hbox {F}}), which is also verified using micromagnetic modeling. The results obtained in TbFe/Fe/TbFe exchange-coupled systems have the potential to be used in magnetic storage technology for hard disk drives.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic properties of thin films · Magnetic Properties of Alloys · Magnetic Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
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