223 citations
- Ibaraki National College of TechnologyJP15 papers
- Ibaraki UniversityJP5 papers
- The University of TokyoJP5 papers
- Tohoku UniversityJP3 papers
- Chiba UniversityJP2 papers
- Spintronics Research Network of JapanJP2 papers
- University of NottinghamGB2 papers
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ1 paper
- International Christian UniversityJP1 paper
- Japan Science and Technology AgencyJP1 paper
- Kobe City College of TechnologyJP1 paper
- Kyoto UniversityJP1 paper
4 papers · 2 filters
Effect of high annealing temperature on giant tunnel magnetoresistance ratio of CoFeB/MgO/CoFeB magnetic tunnel junctions
Jun Hayakawa, Shoji Ikeda, Young Min Lee +2
We report tunnel magnetoresistance (TMR) ratios as high as 472% at room temperature and 804% at 5 K in pseudo-spin valve (SV) CoFeB/MgO/CoFeB magnetic tunnel junctions (MTJs) annea…
Current-induced magnetization switching in MgO barrier based magnetic tunnel junctions with CoFeB/Ru/CoFeB synthetic ferrimagnetic free layer
Jun Hayakawa, Shoji Ikeda, Young Min Lee +5
We report the intrinsic critical current density (Jc0) in current-induced magnetization switching and the thermal stability factor (E/kBT, where E, kB, and T are the energy potenti…
Current-excited magnetization dynamics in narrow ferromagnetic wires
Yoshihiko Togawa, Takashi Kimura, Ken Harada +4
We investigate the current-excited magnetization dynamics in a narrow ferromagnetic Permalloy wire by means of Lorentz microscopy, together with the results of simultaneous transpo…
Giant tunnel magnetoresistance and high annealing stability in CoFeB/MgO/CoFeB magnetic tunnel junctions with synthetic pinned layer
Young Min Lee, Jun Hayakawa, Shoji Ikeda +2
We investigated the relationship between tunnel magnetoresistance (TMR) ratio and the crystallization of CoFeB layers through annealing in magnetic tunnel junctions (MTJs) with MgO…