Large tunnel magnetoresistance in a fully epitaxial double-barrier magnetic tunnel junction of Fe/MgO/Fe/γ-Al2O3/Nb-doped SrTiO3

被引：6
|
作者：
Suzuki, Ryota [1 ]
Tadano, Yuriko [1 ]
Tanaka, Masaaki [1 ,2 ]
Ohya, Shinobu [1 ,2 ,3 ]
机构：
[1] Univ Tokyo, Dept Elect Engn & Informat Syst, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
[2] Univ Tokyo, Ctr Spintron Res Network, Grad Sch Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
[3] Univ Tokyo, Grad Sch Engn, Inst Engn Innovat, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
来源：
AIP ADVANCES | 2020年 / 10卷 / 08期
关键词：
GROWTH;
D O I：
10.1063/5.0002536
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We report large tunnel magnetoresistance (TMR) ratios of up to 219% at 300 K and 366% at 3.7 K obtained for a high-quality fully epitaxial double-barrier magnetic tunnel junction (MTJ) composed of Fe/MgO/Fe/gamma -Al2O3/Nb-doped SrTiO3. The obtained TMR ratios are among the highest values reported in Fe/MgO/Fe structures. This result may be attributed to the small in-plane wave vectors of the tunneling electrons injected from the Nb-doped SrTiO3 electrode with a small carrier density, demonstrating good compatibility between the Fe-based MTJ and SrTiO3.
引用
收藏
页数：5
相关论文
共 50 条
  • [31] Negative spin polarization and large tunneling magnetoresistance in epitaxial Co|SrTiO3|Co magnetic tunnel junctions -: art. no. 216601
    Velev, JP
    Belashchenko, KD
    Stewart, DA
    van Schilfgaarde, M
    Jaswal, SS
    Tsymbal, EY
    PHYSICAL REVIEW LETTERS, 2005, 95 (21)
  • [32] Tunnel magnetoresistance and magnetic ordering in ion-beam sputtered Co80Fe20/Al2O3 discontinuous multilayers
    Kakazei, GN
    Pogorelov, YG
    Lopes, AML
    Sousa, JB
    Cardoso, S
    Freitas, PP
    de Azevedo, MMP
    Snoeck, E
    JOURNAL OF APPLIED PHYSICS, 2001, 90 (08) : 4044 - 4048
  • [33] Characteristics of the Al2O3 barrier with CoFeB pinned layer in magnetic tunnel junctions
    Bae, JY
    Lim, WC
    Kim, HJ
    Kim, TW
    Lee, TD
    IEEE TRANSACTIONS ON MAGNETICS, 2005, 41 (10) : 2676 - 2678
  • [34] Fabrication of fully epitaxial Co2Cr0.6Fe0.4Al/MgO/Co2Cr0.6Fe0.4Al magnetic tunnel junctions
    Marukame, T.
    Ishikawa, T.
    Hakamata, S.
    Matsuda, K-I
    Uemura, T.
    Yamamoto, M.
    IEEE TRANSACTIONS ON MAGNETICS, 2007, 43 (06) : 2782 - 2784
  • [35] Real-time monitoring of the structure of ultrathin Fe3O4 films during growth on Nb-doped SrTiO3(001)
    Kuschel, O.
    Spiess, W.
    Schemme, T.
    Rubio-Zuazo, J.
    Kuepper, K.
    Wollschlaeger, J.
    APPLIED PHYSICS LETTERS, 2017, 111 (04)
  • [36] Large ferroelectric domain structures of epitaxial Bi2FeMnO6 thin films on Nb-doped SrTiO3 substrates
    Shin, Hyun Wook
    Son, Jong Yeog
    JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2017, 28 (20) : 15302 - 15305
  • [37] High tunnel magnetoresistance in fully epitaxial magnetic tunnel junctions with a full-Heusler alloy Co2Cr0.6Fe0.4Al thin film
    Marukame, Takao
    Ishikawa, Takayuki
    Matsuda, Ken-Ichi
    Uemura, Tetsuya
    Yamamoto, Masafumi
    APPLIED PHYSICS LETTERS, 2006, 88 (26)
  • [38] Large ferroelectric domain structures of epitaxial Bi2FeMnO6 thin films on Nb-doped SrTiO3 substrates
    Hyun Wook Shin
    Jong Yeog Son
    Journal of Materials Science: Materials in Electronics, 2017, 28 : 15302 - 15305
  • [39] LARGE MAGNETORESISTANCE EFFECT IN 82NI-FE/AL-AL2O3/CO MAGNETIC TUNNELING JUNCTION
    MIYAZAKI, T
    YAOI, T
    ISHIO, S
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1991, 98 (1-2) : L7 - L9
  • [40] Magnetic tunnelling in Fe-Al2O3-Fe trilayers with radio-frequency sputtered Al2O3 barrier layers
    Fery, C
    Hennet, L
    Lenoble, O
    Piecuch, M
    Snoeck, E
    Bobo, JF
    JOURNAL OF PHYSICS-CONDENSED MATTER, 1998, 10 (30) : 6629 - 6642
12345