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Interdiffusion effect on exchange coupling in annealing NiFe/FeMn and FeMn/NiFe systems by Kuang-Ching Chen; Cheng-Ta Yang; Y. H. Wu; Chao-Hsien Huang; Kuo-Ming Wu; J. C. Wu; S. L. Young; Lance Horng is a Engineering article available to read on EtoBox.
What is Interdiffusion effect on exchange coupling in annealing NiFe/FeMn and FeMn/NiFe systems about?
## Abstract The effect of interdiffusion on the exchange coupling field (H~ex~) and coercivity (H~c~) in annealing NiFe/FeMn and FeMn/NiFe systems was investigated in the study. Type I samples: Silicon substrate/Ta/NiFe/FeMn/Ta and Type II samples: Silicon substrate/Ta/FeMn/NiFe/Ta were prepared. Annealing was carried out at 200 to 450 °C for two hours under 720 Oe, respectively. The results show that the Hex and Hc in two types samples were dependent on the annealing temperature. For both types the magnetization loss ratio (ΔM/M~S~) is negative, which reflects a loss of magnetization associated with interfacial mixing caused by annealing. The magnetization loss ratio becomes larger when the annealing temperature increases. The exchange coupling of these two types samples is associated with interfacial diffusion between the NiFe and FeMn interface. The annealing treatment also affected the H~c~. In these two types samples, the exchange coupling was improved from modification of the interface between layers by annealing. The extended annealing (above 375 °C) changes the exchange coupling in these two types samples due to serious interdiffusion of the interface between NiFe and FeMn
Who reads Interdiffusion effect on exchange coupling in annealing NiFe/FeMn and FeMn/NiFe systems?
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- Author
- Kuang-Ching Chen; Cheng-Ta Yang; Y. H. Wu; Chao-Hsien Huang; Kuo-Ming Wu; J. C. Wu; S. L. Young; Lance Horng
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); Wiley - V C H Verlag GmbbH & Co.; Wiley (ISSN 1862-6351)
- Published
- 2007
- Language
- EN
- Field
- Engineering (Physical Sciences)