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# IEEE Transactions on Magnetics

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Displaying Results 1 - 25 of 504
• ### Front cover

Publication Year: 2012, Page(s): C1
| PDF (375 KB)
• ### IEEE Transactions on Magnetics publication information

Publication Year: 2012, Page(s): C2
| PDF (39 KB)

Publication Year: 2012, Page(s):2697 - 2733
| PDF (547 KB)
• ### Intermag Conference 2012 Conference Chair's Foreword

Publication Year: 2012, Page(s): 2734
| PDF (87 KB) | HTML
• ### Intermag Conference 2012 Publication Chair's Preface

Publication Year: 2012, Page(s): 2735
| PDF (89 KB) | HTML
• ### Intermag Conference 2012 Committee

Publication Year: 2012, Page(s):2736 - 2738
| PDF (78 KB) | HTML
• ### Spin-Based MOSFETs for Logic and Memory Applications and Spin Accumulation Signals in CoFe/Tunnel Barrier/SOI Devices

Publication Year: 2012, Page(s):2739 - 2745
Cited by:  Papers (14)
| | PDF (1156 KB) | HTML

New innovative ferromagnetic source/drain technologies on Si for next-generation-transistor applications are researched and developed using CoFe/AlOxn+-Si and CoFe/MgO n+-Si junctions. As evidence of the spin accumulation in the n+-Si conduction channels, nonlocal spin signals and four-terminal nonlocal-Hanle signals are presented fo... View full abstract»

• ### Intergranular Exchange Coupling in FePt:X:FePt (${rm X}={rm B}$, C, ${rm SiO}_{rm x}$, Cr and ${rm TaO}_{rm x}$) Thin Films for Heat Assisted Magnetic Recording

Publication Year: 2012, Page(s):2746 - 2748
Cited by:  Papers (3)
| | PDF (911 KB) | HTML

In this study we quantitatively determined the exchange coupling across B, C, SiOx, Cr and TaOx segregants by measuring the exchange coupling between two FePt layers separated by segregant layers of varying thickness. Our study indicates that the segregant that provides the best exchange break is TaOx; whereas, C is the worst and SiOx, Cr and B are in be... View full abstract»

• ### An X-Ray Diffraction-Based Method for Evaluating Inhomogeneous Ordering at the Grain Level of ${rm L}1_{0}-{rm FePt}$ Media

Publication Year: 2012, Page(s):2749 - 2752
Cited by:  Papers (2)
| | PDF (782 KB) | HTML

A technique based on x-ray diffraction (XRD) is introduced to understand the variation of the grain-to-grain L10 ordering in FePt recording media. We classify the possible ways that the grains may be ordered into three types: homogeneous ordering, inhomogeneous ordering, and bipolar ordering. We study the possible impact of each type of ordering on the XRD spectra in terms of the relati... View full abstract»

• ### First-Order Reversal Curve Investigations on the Effects of Ion Implantation in Magnetic Media

Publication Year: 2012, Page(s):2753 - 2756
Cited by:  Papers (6)
| | PDF (696 KB) | HTML

Ion implantation of different ion species of varying mass on magnetic recording media was investigated. Except for helium (4He+) and cobalt (59Co+) ions, all the other ions showed reduction in saturation magnetization (Ms). In fact, Ms was reduced to ~ 0 emu/cc at a fluence of 2 × 1016 and 5 × 1016 ions/cm2 ... View full abstract»

• ### Integration of Servo and High Bit Aspect Ratio Data Patterns on Nanoimprint Templates for Patterned Media

Publication Year: 2012, Page(s):2757 - 2760
Cited by:  Papers (8)  |  Patents (1)
| | PDF (2089 KB) | HTML

Magnetic recording bit patterned media (BPM) stands as a promising technology to deliver thermally stable magnetic storage at densities beyond 1 Tb/in2. High throughput BPM fabrication will be enabled by nanoimprint lithography which relies on a high-quality master template to be able to meet pattern fidelity and low defectivity specifications. Master template fabrication for BPM can be... View full abstract»

• ### Effects of Device Geometry on Output Circular Polarization in a Spin-LED

Publication Year: 2012, Page(s):2761 - 2764
Cited by:  Papers (1)
| | PDF (441 KB) | HTML

A surface emitting spin-polarized light emitting diode (Spin-LED) is considered for the study of the device geometry dependence of the output circular polarization It is found that the output circular polarization is maximum at the outer region of the circular non-FM Ohmic contact to the p-region, which delineates radial extent of the active region in the intrinsic layer. We observe that the outpu... View full abstract»

• ### Transition From GMR to AMR at the Percolation Threshold in Ferrite-Magnetic Alloy Composites

Publication Year: 2012, Page(s):2765 - 2768
Cited by:  Papers (1)
| | PDF (1108 KB) | HTML

A thermal spray process has been developed for the deposition of ferrites and highly anisotropic composites of magnetic alloys and ferrites. The critical volume fraction for conduction is at 5 to 10 volumetric percent (vol.%) metal in these thick films as compared to 33 vol.% in isotropic mixtures of spheroidal particles. The low percolation threshold and highly anisotropic transport properties ar... View full abstract»

• ### Measurements of Complex Magnetic Permeability of Nano-Size $varepsilon$ -Al$_{rm x}$ Fe$_{2-{rm x}}$ O$_{3}$ Powder Materials at Microwave and Millimeter Wavelengths

Publication Year: 2012, Page(s):2769 - 2772
Cited by:  Papers (4)
| | PDF (617 KB) | HTML

The imaginary part of complex magnetic permeability spectrum confirms the strong ferromagnetic resonance absorptions to appear at 89 GHz for the ε-AlxFe2-xO3 nanomagnets prepared by sol-gel techniques for the x value to be 0.66. A strong anomalous dispersion corresponding to 89 GHz resonance is also observed in the real part of magnetic permeability spectrum... View full abstract»

• ### Microwave and Millimeter Wave Ferromagnetic Absorption of Nanoferrites

Publication Year: 2012, Page(s):2773 - 2776
Cited by:  Papers (12)
| | PDF (877 KB) | HTML

Complex dielectric permittivity and magnetic permeability of several commercially available nanoferrites have been studied over a broad microwave and millimeter wave frequency range. Nano-sized barium, strontium, copper, zinc, nickel substituted iron oxide powders with different lattice structures are investigated. A transmission-reflection based in-waveguide technique that employs a vector networ... View full abstract»

• ### Characterization of Organic Thin Films on Ferromagnetic Substrates by Spectroscopic Ellipsometry and Magneto-Optical Kerr Effect Spectroscopy

Publication Year: 2012, Page(s):2777 - 2780
Cited by:  Papers (1)
| | PDF (598 KB) | HTML

We report the characterization of metal-phthalocyanine (CuPc and CoPc) thin films prepared on magnetic substrates by spectroscopic ellipsometry (SE) and magneto-optical Kerr effect (MOKE) spectroscopy. CuPc films were prepared on lanthanum strontium manganite (LSMO) substrates while CoPc was deposited onto Co/Pt layer systems. We address the challenge to distinguish between the dominating magneto-... View full abstract»

• ### A Novel and Fast Numerical Technique for Large-Scale Electromagnetic Imaging Systems

Publication Year: 2012, Page(s):2781 - 2784
Cited by:  Papers (1)
| | PDF (573 KB) | HTML

The safety of complex engineered systems and critical infrastructures are important to ensure society's industrial and economic prosperity, advances in complex systems computation and modeling is always greatly desired. Challenges still remain in applications such as large-scale sensing and monitoring of those systems to ensure the structural heath. This paper proposed a novel and fast imaging and... View full abstract»

• ### Interactions Between Magnetic Layers Lying Between Soft Boundary Layers

Publication Year: 2012, Page(s):2785 - 2788
| | PDF (1003 KB) | HTML

Analytic expressions are derived in the 2D frequency-domain for the interaction between magnetized layers that lie between two sheets of soft magnetic material. For example, in writing and reading with perpendicular magnetic recording, a multilayer hard' magnetic medium lies between the soft magnetic underlayer (SUL) of the medium and the soft structures (including shields) that form the read and... View full abstract»

• ### A Micromagnetic Solver for Large-Scale Patterned Media Based on Non-Structured Meshing

Publication Year: 2012, Page(s):2789 - 2792
Cited by:  Papers (11)
| | PDF (948 KB) | HTML

The paper presents a micromagnetic solver, where the long-range contributions to the magnetostatic field are computed by a multipole expansion technique and the spatial distribution of the exchange field is reconstructed via a finite difference scheme able to handle non-structured meshes. In this way, large samples having complex geometries can be simulated. The numerical accuracy, the computation... View full abstract»

• ### Understanding the Magnetization Reversal in Six-Fold Anisotropic Hexagonal Networks

Publication Year: 2012, Page(s):2793 - 2796
Cited by:  Papers (1)
| | PDF (555 KB) | HTML

Isolated magnetic nanowires have been studied extensively and the magnetization reversal mechanism is well understood in these systems. But when these nanowires are joined together in different architectures, they behave differently and can give novel properties. Using this approach, one can engineer the network architectures to get artificial anisotropy. Here, we report six-fold anisotropy by joi... View full abstract»

• ### Reducing Dy Content by Y Substitution in Nanocomposite NdFeB Alloys With Enhanced Magnetic Properties and Thermal Stability

Publication Year: 2012, Page(s):2797 - 2799
Cited by:  Papers (9)
| | PDF (720 KB) | HTML

Dy has been employed as an additive in NdFeB magnets to improve their coercivity and thermal stability, but the high cost of the Dy has become a major concern. In this work, the effects of Y substitution for Dy on the magnetic properties and thermal stability of melt-spun nanocomposite [Nd0.8(Dy1-xYx)0.2]10Fe84B6 alloys h... View full abstract»

• ### Anisotropic Nd $_{2}$Fe $_{14}$B Submicron Flakes by Non-Surfactant-Assisted High Energy Ball Milling

Publication Year: 2012, Page(s):2800 - 2803
Cited by:  Papers (3)
| | PDF (2310 KB) | HTML

This paper reports on the formation mechanism, structure, crystallographic anisotropy, magnetic properties and postannealing of single-crystal and [001] textured poly-nanocrystalline Nd2Fe14B flakes with a micron, submicron or nanosize thickness prepared by a non-surfactant-assisted high energy ball milling (HEBM) technique. Nd15.5Fe78.5B6 ing... View full abstract»

• ### Magnetic Reversal Observation in Nano-Crystalline Nd-Fe-B Magnet by SANS

Publication Year: 2012, Page(s):2804 - 2807
Cited by:  Papers (5)
| | PDF (929 KB) | HTML

Spin-polarized small-angle neutron scattering (Pol-SANS) measurements for nano-crystalline Nd-Fe-B magnet have been performed in order to clarify the magnetic reversal behavior. Due to high transparency of neutron beam, magnetic and nuclear microstructures in the bulk' can be observed by SANS. Obtained SANS patterns arising from magnetic domain changes were analyzed by Teubner-Stray model, phenom... View full abstract»

• ### Annealing Temperature and Co Layer Thickness Dependence of Magnetoresistance Effect for $L1_{0}$-MnGa/Co/MgO/CoFeB Perpendicular Magnetic Tunnel Junctions

Publication Year: 2012, Page(s):2808 - 2811
Cited by:  Papers (1)  |  Patents (1)
| | PDF (595 KB) | HTML

The post annealing temperature and Co thickness dependence of tunnel magnetoresistance (TMR) ratio was investigated for L10-MnGa/Co(tCo)/MgO/CoFeB perpendicular magnetic tunnel junctions (MTJs). The MnGa/MgO interface optimization by Co insertion was shown to be an effective way for improving the TMR ratio. The TMR value increases with the annealing temperature ... View full abstract»

• ### Magnetic Properties and Magnetic Domain Structures Evolution Modulated by CoFeB Layer in [Pd/Co]/CoFeB/MgO/CoFeB/[Co/Pd] Perpendicular MTJ Films

Publication Year: 2012, Page(s):2812 - 2815
Cited by:  Papers (3)
| | PDF (732 KB) | HTML

A series of MgO perpendicular magnetic tunneling junction (p-MTJ) films with soft/hard composite electrodes is prepared by RF-sputtering, where amorphous CoFeB is chosen as soft layer. The modulation of MTJs film magnetic properties on CoFeB thickness is investigated. The critical thickness for composite free layer transform from rigid magnet (RM) to exchange spring system (ES) is indentified. Bes... View full abstract»

## Aims & Scope

IEEE Transactions on Magnetics publishes research in science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Pavel Kabos
National Institute of Standards and Technology