Trinity College Dublin

jfeng
append @tcd.ie

Position: Postdoc

Home: Anhui Province , China

Education:
2002.09 - 2007.07
Ph. D Candidate (Condensed matter Physics), State Key Lab. of Magnetism, Institute of Physics, Chinese Academy of Science, Beijing 100080, China

Main Project:
Micro-fabrication and Magnetic Transport Properties of Single-crystal Oxide-barrier MTJs Supervisor: Prof. Xiu-feng Han
Prof. Wen-shan Zhan

1998.09 - 2002.07
Bachelor of Science (Applied Physics), Physics Department , Anhui University, Hefei , Anhui Province , China

Specialties: Spin electronics in magnetic tunnel junctions; Spin torque transfer; Low frequency magnetic noise; Half-metallic ferromagnet.

Current Projects: Nano-scale MgO magnetic tunnel junction rings & pillars; Spin transfer torque; Low frequency magnetic noise; Perpendicular magnetic tunnel junctions.

Activities/Interests: Walking, physical and life sciences; Deep thought; Thinking travel in universe; Do power of Buddha.

Brief Bio:
Jiafeng joined TCD in October 2006 after completing his Ph.D. in State Key Lab. of Magnetism Institute of Physics, Chinese Academy of Science, Beijing (2002-2007). His current work is focusing on ring-shaped magnetic tunnel junctions with AlOx or MgO as the tunneling barrier, etc.

Publications:

1. Superparamagnetism in MgO-based magnetic tunnel junctions with a thin pinned ferromagnetic electrode J. F. Feng, J. Y. Chen, M. Venkatesan, G. Feng, X. F. Han, and J. M. D. Coey Physical Review B 81, 205212 (2010)
2. Magnetic noise in MgO-based magnetic tunnel junction rings J. F. Feng, Z. Diao, Gen Feng, E. R. Nowak, and J. M. D. Coey Applied Physics letters 96, 052504 (2010)
3. Reduced low frequency noise in electron beam evaporated MgO magnetic tunnel junctions Z. Diao, J. F. Feng, H. Kurt, G. Feng, and J. M. D. Coey Applied Physics letters 96, 202506 (2010)
4. Space-charge trap mediated conductance blockade in tunnel junctions with half-metallic electrodes J. F. Feng, T.-H. Kim, X. F. Han, X.-G. Zhang, Y. Wang, J. Zou, D. B. Yu, H. Yan, and A. P. Li, Applied Physics letters 93, 192507 (2008)
5. High inverted tunneling magnetoresistance in MgO-based magnetic tunnel junctions, J. F. Feng, Gen Feng, J. M. D. Coey, X. F. Han, and W. S. Zhan, Applied Physics letters 91, 102505 (2007)
6. Probing Spin-Flip Scattering in Ballistic Nanosystems, Z. M. Zeng, J. F. Feng, Y. Wang, X. F. Han, X. G Zhang, W. S. Zhan, Z. Zhang, Physical Review Letters 97, 106605 (2006)
7. Magnetic properties of exchange-biased [Co/Pt]n multilayer with perpendicular magnetic anisotropy, Jun-Yang Chen, J. F. Feng, Zhu Diao, Gen Feng, J. M. D. Coey, and Xiu-Feng Han IEEE Trans. Mag. 46, 1401 (2010)
8. A novel design and fabrication of MRAM based on nano-ring-type MTJs (Letter to Editor), X. F. Han, H. X. Wei, Z. L. Peng, H. D. Yang, J. F. Feng, et.al., J. Material Science & Technology 23, 304 (2007)