Fabrication of Fully Epitaxial Magnetic Tunnel Junctions Using Full-Heusler Alloy Co2Cr0.6Fe0.4Al Thin Film and MgO Tunnel Barrier
スポンサーリンク
概要
- 論文の詳細を見る
Fully epitaxial magnetic tunnel junctions (MTJs) were fabricated using a Co-based full-Heusler alloy Co2Cr0.6Fe0.4Al (CCFA) thin film and a MgO tunnel barrier. The fabricated MTJs had the following layer structure: MgO buffer layer/CCFA lower electrode/MgO tunnel barrier/CoFe upper electrode, grown on a MgO single-crystal substrate. All layers were successively deposited in an ultrahigh vacuum chamber through the combined use of magnetron sputtering and electron beam evaporation. RHEED patterns observed in situ for each layer during preparation clearly indicated that all layers grew epitaxially with the (001) basal plane. The microfabricated epitaxial CCFA/MgO/CoFe MTJs demonstrated relatively high tunnel magnetoresistance ratios, for MTJs using a full-Heusler alloy, of 42% at room temperature and 74% at 55 K. These results confirm the promise of an epitaxial MTJ using a Co-based full-Heusler alloy as a key device structure utilizing the potentially high spin polarization of this material system.
- 2005-04-10
著者
-
Kasahara Takashi
Division Of Cardiology San-in Rousai Hospital
-
Matsuda Ken-ichi
Division of Electronics for Informatics, Graduate School of Information Science and Technology, Hokkaido University, Sapporo 060-0814, Japan
-
Uemura Tetsuya
Division of Electronics and Information Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo 060-8628, Japan
-
Yamamoto Masafumi
Division of Electronics and Information Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo 060-8628, Japan
-
Marukame Takao
Division of Electronics and Information Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo 060-8628, Japan
関連論文
- PJ-287 Coronary Artery Disease Patients with Complicating Lp (a) Hyperlipoproteinemia Are Clinically Characterized by Anti-metabolic Syndrome : A study in male non-diabetic patients(Atherosclerosis, Clinical 3 (IHD) : PJ48)(Poster Session (Japanese))
- PJ-263 Half the Number of CAD Patients without Clinical Background owing to Metabolic Syndrome had Hyperlipoprotein(a)emia(PJ044,Atherosclerosis (Clinical/Diagnosis) 2 (IHD),Poster Session (Japanese),The 73rd Annual Scientific Meeting of The Japanese Circ
- PJ-622 Half the Number of CAD Patients without Clinical Background Caused by Metabolic Syndrome had Lipoprotein(a) Hyperlipoproteinemia-A Study in Non-Diabetic Patients(Atherosclerosis, clinical(12)(IHD),Poster Session(Japanese),The 72nd Annual Scientific
- PJ-419 Patients with Complicating Lipoprotein(a)[Lp(a)] Hyperlipoproteinemia had Severe Coronary Lesions Despite Their Clinical Background of Anti-metabolic Syndrome(Atherosclerosis, clinical-11, The 71st Annual Scientific Meeting of the Japanese Circulat
- PJ-327 A Role of Lp(a) in the Progress of Coronary Arteriosclerosis : A Study in Relation to Insulin(Atherosclerosis, clinical-10 (H) PJ55,Poster Session (Japanese),The 70th Anniversary Annual Scientific Meeting of the Japanese Circulation Society)
- The Effect of Lipoprotein (a) on the Progress of Coronary Arteriosclerosis in Non-Diabetic Male Patients-the Relationship to Insulin Resistance
- Production of Bacterial Cellulose with Well Oriented Fibril on PDMS Substrate
- A Synthesis of(E)-(1-Organo-1-alkenyl)boronates by the Palladium-Catalyzed Cross-Coupling Reaction of(E)-1, 2-Bis(boryl)-1-alkenes with Organic Halides : A Formal Carboboration of Alkynes via the Diboration-Coupling Sequence
- Magnetic and Electrical Properties of (La,Sr)MnO3 Sputtered on SrTiO3-Buffered Si Substrate
- Magnetic and Electrical Properties of (La, Sr)MnO_3 Sputtered on SrTiO_3-buffered Si Substrate
- Fabrication of Fully Epitaxial Magnetic Tunnel Junctions Using Full-Heusler Alloy Co2Cr0.6Fe0.4Al Thin Film and MgO Tunnel Barrier
- Highly Spin-Polarized Tunneling in Epitaxial Magnetic Tunnel Junctions with a Co2MnSi Electrode and a MgO Barrier with Improved Interfacial Structural Properties
- Fabrication of Fully Epitaxial CoFe/MgO/CoFe Magnetic Tunnel Junctions on Ge(001) Substrates via a MgO Interlayer
- Effect of MgO Barrier Insertion on Spin-Dependent Transport Properties of CoFe/n-GaAs Heterojunctions
- Retroperitoneoscopic nephrectomy using a GelPort as the main access platform with a muscle-splitting approach : initial clinical experience
- Magnetic Anisotropy Study for GaMnAs-Based Magnetic Tunnel Junction
- Epitaxial Growth of Fe/MgO/Fe Heterostructures on SrTiO3(001) Substrates by Magnetron Sputtering
- Novel Magnetic Random Access Memory Cell Consisting of Magnetic Tunnel Junction Connected in Parallel with Negative Differential Resistance Device
- Large Enhancement of Tunneling Magnetoresistance Ratio in Magnetic Tunnel Junction Connected in Series with Tunnel Diode
- Reproducibility and Accuracy in Measuring Masticatory Performance Using Test Gummy Jelly