Please use this identifier to cite or link to this item:
|Title:||Structural and magnetic properties of epitaxial Heusler alloy Fe 2Cr0.5Co0.5Si|
|Citation:||Wang, Y.-P., Han, G.-C., Lu, H., Qiu, J., Yap, Q.-J., Teo, K.-L. (2014-05-07). Structural and magnetic properties of epitaxial Heusler alloy Fe 2Cr0.5Co0.5Si. Journal of Applied Physics 115 (17) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4852117|
|Abstract:||This paper reports the study of structural and magnetic properties of Heusler alloy Fe2Cr0.5Co0.5Si (FCCS) thin film and its tunnel magnetoresistance (TMR) effect. The smooth quaternary Heusler alloy FCCS film with surface roughness of rms value of 0.25 nm measured by atomic force microscopy and partial L21 phase was obtained by magnetron sputtering at room temperature followed by in-situ annealing at 400 C. The saturation magnetization and coercivity of FCCS are 410 emu/cm3 and 20 Oe, respectively. The magnetic tunnel junctions (MTJs) using FCCS as free layer were studied in detail as a function of post-annealing temperature. A TMR ratio of 15.6% has been achieved with 300 C post-annealing. This is about twice the highest TMR ratio obtained in MTJs using Fe2CrSi. The enhancement of TMR ratio can be attributed to the successful tuning of the Fermi level of Fe2CrSi close to the center of the minority band gap by Co-doping. © 2014 AIP Publishing LLC.|
|Source Title:||Journal of Applied Physics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 21, 2019
WEB OF SCIENCETM
checked on Feb 12, 2019
checked on Feb 8, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.