1. Tuning in-plane magnetic anisotropy and temperature stability in amorphous trilayers.
- Author
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Löfstrand, Julia, Rani, Parul, Jönsson, Petra E., and Andersson, Gabriella
- Subjects
- *
MAGNETIC anisotropy , *THIN films , *MAGNETIC films , *DC sputtering , *MAGNETIC properties - Abstract
Better understanding of the nature of magnetic coupling in soft/hard nanocomposites paves the way for tailored exchange-spring magnets. We have investigated a series of amorphous magnetic thin films and trilayers of magnetically soft Co 85 (Al 70 Zr 30) 15 and magnetically hard Sm 12 Co 81 Ti 7 , produced with DC magnetron sputtering. The overall magnetic properties of the trilayers were investigated with focus on the effects of layer configuration and thicknesses on coercivity, originating from the Sm 12 Co 81 Ti 7 phase, and uniaxial in-plane anisotropy induced from the Co 85 (Al 70 Zr 30) 15 phase. In addition, we found that the thermal stability of a 20 nm Sm 12 Co 81 Ti 7 layer was significantly increased if surrounded by two 10 nm Co 85 (Al 70 Zr 30) 15 layers in a trilayer structure. • Properties of trilayers of amorphous hard and soft magnetic phases depend on layer thicknesses. • Uniaxial anisotropy is transferred from soft to hard phases in trilayers. • More pronounced anisotropy with thicker soft layer in hard/soft/hard trilayers. • Stronger coupling between phases in soft/hard/soft samples than in hard/soft/hard. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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