Huge Spin-Polarization of L21-Ordered Co2MnSi Epitaxial Heusler Alloy Film
スポンサーリンク
概要
- 論文の詳細を見る
Magnetic tunnel junctions (MTJs) with a stacking structure of epitaxial Co2MnSi/Al–O barrier/poly-crystalline Co75Fe25 were fabricated using an ultrahigh vacuum sputtering system. The epitaxial Co2MnSi bottom electrode exhibited highly ordered L21 structure and very smooth surface morphology. Observed magnetoresistance (MR) ratios of 70% at room temperature (RT) and 159% at 2 K are the highest values to date for MTJs using a Heusler alloy electrode. A high spin-polarization of 0.89 at 2 K for Co2MnSi obtained from Julliere's model coincided with the half-metallic band structure that was predicted by theoretical calculations.
- Japan Society of Applied Physicsの論文
- 2005-08-10
著者
-
Oogane Mikihiko
Department Of Applied Physics Graduate School Of Engineering Tohoku University
-
Ando Yasuo
Department Of Applied Physics Graduate School Of Engineering Tohoku University
-
Nakata Jun
Department Of Applied Physics Graduate School Of Engineering Tohoku University
-
Sakuraba Yuya
Department Of Applied Physics Graduate School Of Engineering Tohoku University
-
Sakuma Akimasa
Department Of Applied Physics Graduate School Of Engineering Tohoku University
-
Miyazaki Terunobu
Department Of Applied Physics Faculty Of Engineering Tohoku University
-
Kubota Hitoshi
Nanoelectronics Research Institute (neri) National Institute Of Advanced Industrial Science And Tech
-
Ando Yasuo
Department of Applied Physics, Graduate School of Engineering, Tohoku University, Aoba-yama 05, Aramaki, Aoba-ku, Sendai 980-8579, Japan
-
Sakuraba Yuya
Department of Applied Physics, Graduate School of Engineering, Tohoku University, Aoba-yama 05, Aramaki, Aoba-ku, Sendai 980-8579, Japan
-
Oogane Mikihiko
Department of Applied Physics, Graduate School of Engineering, Tohoku University, Aoba-yama 05, Aramaki, Aoba-ku, Sendai 980-8579, Japan
関連論文
- Direct Observation of Atomic Ordering and Interface Structure in Co_2MnSi/MgO/Co_2MnSi Magnetic Tunnel Junctions by High-Angle Annular Dark-Field Scanning Transmission Electron Microscopy
- Large Tunnel Magnetoresistance of 1056% at Room Temperature in MgO Based Double Barrier Magnetic Tunnel Junction
- Gilbert Damping for Various Ni_Fe_ Thin Films Investigated Using All-Optical Pump-Probe Detection and Ferromagnetic Resonance
- Tunnel Magnetoresistance Effect in Magnetic Tunnel Junctions Using a Co_2MnSi(110) Electrode
- Tunneling Spin Polarization and Magnetic Properties of Co-Fe-B Alloys and Their Dependence on Boron Content
- Anisotropic Intrinsic Damping Constant of Epitaxial Co_2MnSi Heusler Alloy Films
- Temperature Dependence of Tunnel Magnetoresistance in Co-Mn-Al/Al-Oxide/Co-Fe Junctions
- Spin-Dependent Inelastic Electron Tunneling Spectroscopy of Magnetic Tunnel Junctions
- Large Magnetoresistance in Magnetic Tunnel Junctions Using Co-Mn-Al Full Heusler Alloy
- New Magnetic Nano-Dot Memory with FePt Nano-Dots
- Fabrication and Evaluation of Magnetic Tunnel Junction with MgO Tunneling Barrier
- Spin-Transfer Switching and Thermal Stability in an FePt/Au/FePt Nanopillar Prepared by Alternate Monatomic Layer Deposition
- PJ-610 Left Ventricular Diastolic Dysfunction and Pulmonary Hypertension Relating to Hypoxemia Contribute to High Altitude Pulmonary Edema (HAPE)(PJ102,Pulmonary Circulation 2 (H),Poster Session (Japanese),The 73rd Annual Scientific Meeting of The Japanes
- Structural characterization of epitaxial multiferroic BiFeO3 films grown on SrTiO3 (100) substrates by crystallizing amorphous Bi–Fe–Ox
- Theoretical analysis of highly spin-polarized transport in the iron nitride Fe4N
- Temperature Dependence of the Spin Tunneling Magnetoresistive Effect on NiFe/Co/Al_2O_3/Co/NiFe/FeMn Junctions
- PE-515 Clinical Significance of B-type Natriuretic Peptide in the Outpatients with Chronic Obstructive Pulmonary Disease(PE086,Pulmonary Circulation (H),Poster Session (English),The 73rd Annual Scientific Meeting of the Japanese Circulation Society)
- Optical Degradation of a-Si:H films with Different Morphology : Semiconductors and Semiconductor Devices
- Effective Exchange Constant and Electronic Structure of Pseudo-Gap-Type L1_0-MnPd Alloys(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Scanning Tunneling Microscopy Observation of the Initial State of Oxidation in Ferromagnetic Tunnel Junctions : Magnetism
- Critical Thickness of Antiferromagnetic Layer in Exchange Biasing Bilayer System(Condensed matter: structure and mechanical and thermal properties)
- Exchange Bias of Antiferromagnetic/Ferromagnetic Bilayer with Cubic Anisotropy in Antiferromagnetic Layer(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Magnetic and Electrical Properties, and Mechanism of Exchange Bias-field of γ-phase and Ll_0-type Antiferromagnetic Mn Alloys
- Direct Imaging of Local Spin Orientation within Artificial Nanomagnets
- Magnetic Relaxation in Amorphous (Fe_Ni_x)_Si_B_ Alloys
- Peltier Effect in Sub-micron-Size Metallic Junctions
- The Study on Ferromagnetic Resonance Linewidth for NM/80NiFe/NM (NM = Cu, Ta, Pd and Pt) Films
- Annealing Effect on Low-Resistance Ferromagnetic Tunnel Junctions
- 26pPSA-69 Spin reorientation and first order magnetization process in Ho_3Fe_T_x(T=V and Cr)
- Magnetoresistance Effect in Tunnel Junctions with Perpendicularly Magnetized $D$022-Mn3-\deltaGa Electrode and MgO Barrier
- Fabrication of Magnetic Tunnel Junctions with a Synthetic Ferrimagnetic Free Layer for Magnetic Field Sensor Applications
- Retraction: ``Large Tunnel Magnetoresistance of 1056% at Room Temperature in MgO Based Double Barrier Magnetic Tunnel Junction''
- Theoretical study of a localized quantum spin reversal by the sequential injection of spins in a spin quantum dot
- Spin-Torque Diode Effect and Its Application(Advances in Spintronics)
- Laser-Induced Fast Magnetization Precession and Gilbert Damping for CoCrPt Alloy Thin Films with Perpendicular Magnetic Anisotropy
- Inverse Current-Induced Magnetization Switching in Magnetic Tunnel Junctions with Fe4N Free Layer
- Anomalous Anisotropic Magnetoresistance in Pseudo-Single-Crystal $\gamma'$-Fe4N Films
- Electronic Structures and Magnetic Phase Stability of L1_0 and B2-Type MnRh Equiatomic Alloys(Condensed matter : electronic structure and electrical, magnetic, and optical properties)
- Electrical and Magnetic Properties, and Electronic Structures of Pseudo-Gap-Type Antiferromagnetic L1_0-Type MnPt Alloys
- Magnetic Domains of an Amorphous Fe_P_C_7 Alloy
- Magnetic Properties of Rapidly Quenched Fe-Al Alloys
- INSTABILITY OF PERMEABILITY OF AN AMORPHOUS Fe_5Co_Si_B_ ALLOY
- Magneto-Optical Spectra in Co/MgO, Ni/MgO, Co/Ag and Ni/Ag Multilayers
- Magnetic Anisotropy in an Amorphous Fe_P_C_7 Alloy
- Temperature and Applied Voltage Dependence of Magnetoresistance Ratio in Fe/Al oxide/Fe Junctions
- The Variation of the Uniaxial Magnetic Anisotropy along the Thickness in an Amorphous Fe_P_C_7 Alloy
- Influence of Pt doping on Gilbert damping in permalloy films and comparison with the perpendicularly magnetized alloy films
- High Resolution Electron Microscopy Observation of Different Al-Oxide Layers in Magnetic Tunnel Junctions : Surfaces, Interfaces, and Films
- Direct Observation of Domain Structure and Magnetization Reversal of Magnetic Thin Films Using Lorentz Transmission Electron Microscopy : Magnetism
- Enhancement of Tunnel Magnetoresistance Effect on Junction with Co Cluster Layers in Coulomb Blockade Regime
- Direct Observation of Magnon Excitation in a Ferromagnetic Tunnel Junction Using Inelastic-Electron-Tunneling Spectroscopy
- Determination of Penetration Depth of Transverse Spin Current in Ferromagnetic Metals by Spin Pumping
- Annealing Temperature Dependences of Ferroelectric and Magnetic Properties in Polycrystalline Co-Substituted BiFeO3 Films
- Magnetic Damping in Ferromagnetic Thin Films
- Local Transport Property on Ferromagnetic Tunnel Junction Measured Using Conducting Atomic Force Microscope
- Relationship between Magnetocrystalline Anisotropy and Orbital Magnetic Moment in L1-Type Ordered and Disordered Alloys
- Damping of Magnetization Precession in Perpendicularly Magnetized CoFeB Alloy Thin Films
- Large Magnetoresistance Effect in Epitaxial Co_2Fe_Mn_Si/Ag/Co_2Fe_Mn_Si Devices
- Model Calculation of Magnetization Reversal Process of Hard Magnet in Nd_2Fe_B System
- Dependence of Tunnel Magnetoresistance Effect on Fe Thickness of Perpendicularly Magnetized L1_0-Mn_Ga_/Fe/MgO/CoFe Junctions
- Microscopic Theory of Magnon-Drag Thermoelectric Transport in Ferromagnetic Metals
- Theoretical Study on Gilbert Damping of Nonuniform Magnetization Precession in Ferromagnetic Metals
- Anisotropic Magnetoresistance Effects in Fe, Co, Ni, Fe4N, and Half-Metallic Ferromagnet: A Systematic Analysis
- Degree of Order Dependence on Magnetocrystalline Anisotropy in Body-Centered Tetragonal FeCo Alloys
- Damping of Magnetization Precession in Perpendicularly Magnetized CoFeB Alloy Thin Films
- Fabrication of Co2MnAl Heusler Alloy Epitaxial Film Using Cr Buffer Layer
- Fabrication and Evaluation of Magnetic Tunnel Junction with MgO Tunneling Barrier
- Evaluation of Spin-Transfer Switching in CoFeB/MgO/CoFeB Magnetic Tunnel Junctions
- Large Magnetoresistance in Magnetic Tunnel Junctions Using Co-Mn-Al Full Heusler Alloy
- Gilbert Damping in Ni/Co Multilayer Films Exhibiting Large Perpendicular Anisotropy
- Spin-Dependent Inelastic Electron Tunneling Spectroscopy of Magnetic Tunnel Junctions
- Structural and Magnetic Properties of Co2MnSi Heusler Alloy Thin Films on Si
- Huge Spin-Polarization of L21-Ordered Co2MnSi Epitaxial Heusler Alloy Film
- New Magnetic Nanodot Memory with FePt Nanodots
- Direction and Size of Ir Magnetic Moment Induced in MnIr/Co
- A Simple Fabrication Process using Focused Ion Beam for Deep Submicron Magnetic Tunnel Junctions
- Boron Composition Dependence of Spin-Transfer Switching in Magnetic Tunnel Junctions with CoFeB Free Layers
- Temperature Dependences of Spin-Diffusion Lengths of Cu and Ru layers
- Spin Injection into Organic Light-Emitting Devices with Ferromagnetic Cathode and Effects on Their Luminescence Properties
- First Principles Calculation of Magnetocrystalline Anisotropy Energy of MnBi and MnBi
- The Enhancement of Magnetic Damping in Fe
- Enhancement of Spin Pumping Efficiency in Fe
- Observation of Precessional Magnetization Dynamics in L1
- High-Magnetoresistance Tunnel Junctions Using Co_Fe_ Ferromagnetic Electrodes
- Tetragonal D0
- The Enhancement of Magnetic Damping in Fe₄N Films with Increasing Thickness (Spintronics, superconductivity, and strongly correlated materials)
- Enhancement of Spin Pumping Efficiency in Fe₄N/Pt Bilayer Films
- Degree of Order Dependence on Magnetocrystalline Anisotropy in Body-Centered Tetragonal FeCo Alloys
- Direction and Size of Ir Magnetic Moment Induced in MnIr/Co₁₋xFe[x] Exchange Bias Bilayers from Resonant X-ray Magnetic Scattering Experiments at the Ir L₃ Absorption Edge
- Observation of Precessional Magnetization Dynamics in L1₀-FePt Thin Films with Different L1₀ Order Parameter Values (Spintronics, superconductivity, and strongly correlated materials)