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Enhanced Tunnel Magnetoresistance Effect in an Epitaxial Magnetic Tunnel Junction with a Hybrid $γ-Fe_{2}O_{3}$/MgO Barrier
| Content Provider | Scilit |
|---|---|
| Author | Nozaki, Takayuki Kubota, Hitoshi Fukushima, Akio Yuasa, Shinji |
| Copyright Year | 2013 |
| Description | Journal: Applied Physics Express We investigated the spin-dependent transport properties of a fully epitaxial Fe/MgO/γ-Fe2O3/Fe(001) magnetic tunnel junction (MTJ) with a hybrid MgO/γ-Fe2O3 tunnel barrier, aiming at a high magnetoresistance (MR) ratio through the synergistic effect between the symmetry filtering in the MgO and the spin filtering in the ferrimagnetic γ-Fe2O3. The epitaxial γ-Fe2O3 barrier was formed by the reactive deposition of Fe in an atmosphere of atomic oxygen. The hybrid barrier MTJ exhibited an MR ratio of 270% at 20 K, which exceeded that of a conventional MgO(001)-MTJ (220% at 20 K). Even at room temperature, a relatively high MR ratio of 120% was achieved. |
| Related Links | http://iopscience.iop.org/1882-0786/6/5/053005/pdf/1882-0786_6_5_053005.pdf |
| ISSN | 18820778 |
| e-ISSN | 18820786 |
| DOI | 10.7567/apex.6.053005 |
| Journal | Applied Physics Express |
| Issue Number | 5 |
| Volume Number | 6 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2013-05-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Applied Physics Express Γ Fe2o3 Tunnel Junction Mr Ratio Magnetic Tunnel |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy Engineering |
