Tunnel magnetoresistance in full-epitaxial magnetic tunnel junctions with a top electrode consisting of a perpendicularly magnetized D022-Mn3Ge film

被引：9

作者：

Sugihara, Atsushi ^{[1
]}

Suzuki, Kazuya ^{[1
]}

Miyazaki, Terunobu ^{[1
]}

Mizukami, Shigemi ^{[1
]}

机构：

[1] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2015年 / 54卷 / 07期

关键词：

ANISOTROPY;

D O I：

10.7567/JJAP.54.078002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We grew a magnetic tunnel junction (MTJ) with a top electrode consisting of a Mn3Ge film using a thin Co-Fe alloy film as a seed layer. X-ray diffraction showed that the Mn3Ge had (001)-oriented D0(22) structure epitaxially grown on an MgO(001) substrate. Magnetic hysteresis loops suggested that the D0(22)-Mn3Ge film possessed perpendicular magnetic anisotropy. A magnetoresistance (MR) ratio of 11.3% was observed in the microfabricated MTJ at room temperature. The resistance-field curve suggested that the top-Co-Fe and D0(22)-Mn3Ge layer are weakly coupled antiferromagnetically. The optimization of top-Co-Fe composition would improve MR ratio. (C) 2015 The Japan Society of Applied Physics

引用

页数：3

共 26 条

[1] Magnetic and transport properties of Mn3-xGa/MgO/Mn3-xGa magnetic tunnel junctions: A first-principles study [J].

Bai, Zhaoqiang ;

Cai, Yongqing ;

Shen, Lei ;

Yang, Ming ;

Ko, Viloane ;

Han, Guchang ;

Feng, Yuanping .

APPLIED PHYSICS LETTERS, 2012, 100 (02)

[2] Mn3Ga, a compensated ferrimagnet with high Curie temperature and low magnetic moment for spin torque transfer applications [J].

Balke, Benjamin ;

Fecher, Gerhard H. ;

Winterlik, Juergen ;

Felser, Claudia .

APPLIED PHYSICS LETTERS, 2007, 90 (15)

[3] Spin-Polarized Electron Tunneling in bcc FeCo/MgO/FeCo(001) Magnetic Tunnel Junctions [J].

Bonell, F. ;

Hauet, T. ;

Andrieu, S. ;

Bertran, F. ;

Le Fevre, P. ;

Calmels, L. ;

Tejeda, A. ;

Montaigne, F. ;

Warot-Fonrose, B. ;

Belhadji, B. ;

Nicolaou, A. ;

Taleb-Ibrahimi, A. .

PHYSICAL REVIEW LETTERS, 2012, 108 (17)

[4] Anomalous Hall effect in perpendicularly magnetized Mn3-xGa thin films [J].

Glas, M. ;

Ebke, D. ;

Imort, I-M ;

Thomas, P. ;

Reiss, G. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2013, 333 :134-137

[5] Fabrication of L10-MnAl perpendicularly magnetized thin films for perpendicular magnetic tunnel junctions [J].

Hosoda, Masaki ;

Oogane, Mikihiko ;

Kubota, Miho ;

Kubota, Takahide ;

Saruyama, Haruaki ;

Iihama, Satoshi ;

Naganuma, Hiroshi ;

Ando, Yasuo .

JOURNAL OF APPLIED PHYSICS, 2012, 111 (07)

[6]

Iba Y., 2013, S VLSI TECHN, pT136

[7] Loss of anisotropy in strained ultrathin epitaxial L10 Mn-Ga films [J].

Koehler, Albrecht ;

Knez, Ivan ;

Ebke, Daniel ;

Felser, Claudia ;

Parkin, Stuart S. P. .

APPLIED PHYSICS LETTERS, 2013, 103 (16)

[8] Magnetic and transport properties of tetragonal- or cubic-Heusler-type Co-substituted Mn-Ga epitaxial thin films [J].

Kubota, T. ;

Ouardi, S. ;

Mizukami, S. ;

Fecher, G. H. ;

Felser, C. ;

Ando, Y. ;

Miyazaki, T. .

JOURNAL OF APPLIED PHYSICS, 2013, 113 (17)

[9] Magnetic and electronic properties of D022-Mn3Ge (001) films [J].

Kurt, H. ;

Baadji, N. ;

Rode, K. ;

Venkatesan, M. ;

Stamenov, P. ;

Sanvito, S. ;

Coey, J. M. D. .

APPLIED PHYSICS LETTERS, 2012, 101 (13)

[10] Mn3-xGa (0 ≤ x ≤ 1): Multifunctional thin film materials for spintronics and magnetic recording [J].

Kurt, H. ;

Rode, K. ;

Venkatesan, M. ;

Stamenov, P. ;

Coey, J. M. D. .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2011, 248 (10) :2338-2344

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