Ultra-thin L1(0)-FePt for perpendicular anisotropy L1(0)-FePt/Ag/[Co/Pd](30) pseudo spin valves

作者：Ho Pin; Han Guchang; He Kaihua; Chow Gan Moog; Chen Jing Sheng^*

来源：Journal of Applied Physics, 2014, 115(17): 17C102.

DOI：10.1063/1.4853175

Perpendicular anisotropy L1(0)-FePt/Ag/[Co/Pd](30) pseudo spin valves (PSVs) with ultra-thin L1(0)-FePt alloy free layer possessing high anisotropy and thermal stability have been fabricated and studied. The thickness of the L1(0)-FePt layer was varied between 2 and 4 nm. The PSV became increasingly decoupled with reduced L1(0)-FePt thickness due to the larger difference between the coercivity of the L1(0)-FePt and [Co/Pd](30) films. The PSV with an ultra-thin L1(0)-FePt free layer of 2 nm displayed a high K-u of 2.21 x 10(7) ergs/cm(3), high thermal stability of 84 and a largest giant magnetoresistance of 0.54%.

• 出版日期2014-5-7
• 单位中国地质大学（北京）