# IEEE Transactions on Magnetics

## Issue 5  Part 2 • Sept. 1997

This issue contains several parts.Go to:  Part 1  | Part 3

## Filter Results

Displaying Results 1 - 25 of 258
• ### Magnetic anisotropy of [Ni/sub 80/Fe/sub 20//Mo/Co] spin-valve films grown by MBE

Publication Year: 1997, Page(s):3952 - 3954
Cited by:  Papers (11)  |  Patents (3)
| | PDF (438 KB)

Nigh-quality spin-valve trilayers [Ni80Fe20Mo/CO] have been grown on MO buffer layer on MgO (110) and MgO (100) substrates by MBE. Structure and orientation relationships were determined by XRD and RHEED. The LMOKE studies show that both CO and Ni80Fe20 layers exhibit uniaxial magnetic anisotropy for a trilayer grown on MgO (110). On the other hand, near... View full abstract»

• ### Conference Author Index

Publication Year: 1997, Page(s):4275 - 4284
| PDF (720 KB)
• ### Novel writing' using magnetic force microscopy in ultrahigh vacuum

Publication Year: 1997, Page(s):4050 - 4052
Cited by:  Papers (3)
| | PDF (668 KB)

Circular magnetic domains have been nucleated on ultrathin Co films by controlled surface touching using magnetic force microscopy tip in ultrahigh vacuum. The process of domain nucleation is due to strain induced perpendicular anisotropy on the surface of Co film. The smallest nucleated domain is 64 nm in diameter. The dependence of the size of the “written” domain on the time period ... View full abstract»

• ### Finite-element analysis of a brushless PM DC linear motor taking the saturation effects into account

Publication Year: 1997, Page(s):4197 - 4199
Cited by:  Papers (7)
| | PDF (320 KB)

This paper is concerned with the analysis of a permanent magnet DC linear actuator composed of a slotless armature and a permanent magnet slider. A two-dimensional finite-element field solution is employed in order to illustrate the effect of iron core saturation on the actuator performance. The available thrust is calculated at any slider position and for any winding current and is compared to th... View full abstract»

• ### Effects of surface/interface morphology on giant magnetoresistance and magnetic field sensitivity of NiO-based spin-valves

Publication Year: 1997, Page(s):3550 - 3552
Cited by:  Papers (4)
| | PDF (444 KB)

The effects of surface/interface morphology on the giant magnetoresistance (GMR) and magnetic field sensitivity (MFS) of NiFe/Co/Cu/Co/NiFe/NiO/Si and Co/Cu/Co/NiO/Si bottom spin-valve films were studied. The NiO-based spin valves were fabricated on NiO films with different surface roughnesses. A GMR of 4.02% and a MFS of 0.83%/Oe were obtained from the spin-valves with a smoother surface/interfac... View full abstract»

• ### Magnetic resonance force microscopy with a permanent magnet on the cantilever

Publication Year: 1997, Page(s):4047 - 4049
Cited by:  Papers (11)
| | PDF (312 KB)

When the variation of the bias field is on the order of a few hundred gauss, permanent magnetic microparticles of Nd2Fe14B (NdFeB) mounted on atomic force microscopy (AFM) cantilevers generate much smaller nonresonance (NR) signals in the magnetic resonance force microscopy (MRFM) spectra than most soft magnetic thin films. However, the interactions of the NdFeB particle with... View full abstract»

• ### Analysis and experimental validation of performance for an axial flux permanent magnet brushless DC motor with powder iron metallurgy cores

Publication Year: 1997, Page(s):4194 - 4196
Cited by:  Papers (13)
| | PDF (336 KB)

A small axial flux permanent magnet (AFPM) brushless DC servomotor with powder iron metallurgy cores has been designed and built and its results are presented in this paper. To predict the motor performance, 2-D and 3-D finite element analyses have been performed respectively, and the results are compared in terms of computations of the no-load field and the cogging torque. Finally, the computed r... View full abstract»

• ### Magnetic and Mossbauer studies in Fe/Au multilayers

Publication Year: 1997, Page(s):3697 - 3699
Cited by:  Papers (1)
| | PDF (304 KB)

A series of Fe/Au multilayers have been sputter deposited and their magnetic and Mossbauer properties studied. The magnetization shows a clear tendency to increase for Fe layers t(Fe) thinner than 12 Å. For these samples the magnetic moment of Fe at 5 K is calculated to be 2.64 μB which is about 20% higher than that of bulk Fe. The surface anisotropy at 295 K is found to be +0.38 erg.cm View full abstract»

• ### Magnetoresistance in spin-valves with antiferromagnetic NiO/CuO/NiO trilayers

Publication Year: 1997, Page(s):3547 - 3549
Cited by:  Papers (2)
| | PDF (300 KB)

Magnetoresistance and exchange coupling in spin-valve films using antiferromagnetic NiO/CuO/NiO trilayers were investigated. The exchange coupling field Hex and MR ratio in the NiO300 Å /CuO300 Å/NiO300 Å/NiFe50 Å/Cu20 Å/NiFe50 Å films were almost constant values of 100 Oe and 4.5% desp... View full abstract»

• ### Dynamic magnetic behaviour of interacting γ-Fe2O 3 nanoparticles dispersed in epoxy resin

Publication Year: 1997, Page(s):3724 - 3726
Cited by:  Papers (5)  |  Patents (1)
| | PDF (308 KB)

The dynamical behaviour of γ-Fe2O3 particles synthesized by a microemulsion route, with an average diameter of 7 nm and dispersed in an epoxy-resin at different concentrations, has been investigated by a.c. magnetic susceptibility measurements (8<f (Hz)<1000). For the most diluted sample, the frequency dependence of the temperatures of the maximum of the in-phase ... View full abstract»

• ### Magnetic flux sensing principle of microstrip pickup coil

Publication Year: 1997, Page(s):4044 - 4046
Cited by:  Papers (7)
| | PDF (360 KB)

We investigated the operating mechanism of the microstrip-line type pickup coil used for thin-film permeance measurements up to GHz range. We found that some flux lines form continuous loops around the ground plane when the coil has a sample window. How the flux distribution changes and how the induced voltage increases when a magnetic sample is inserted was clarified by measurements of flux distr... View full abstract»

• ### Model for transients in linear induction machines

Publication Year: 1997, Page(s):4191 - 4193
Cited by:  Papers (5)
| | PDF (432 KB)

A differential equation model for linear induction machines is developed that is capable of predicting both transient and steady-state performance. The model is verified by comparison with switch-on transient measurements taken at constant speed. Additional verification is given by including mechanical equations and comparing a variable speed run-up prediction with measurements taken on a large sc... View full abstract»

• ### A novel technique for obtaining the optical constants of magnetic materials

Publication Year: 1997, Page(s):4023 - 4025
Cited by:  Papers (1)
| | PDF (276 KB)

The optical constants of a magnetic material may be determined by simultaneous measurement of the fractional changes in both the reflectance and the absorption introduced in the magneto-optic interaction when the sample magnetisation is reversed between saturated states. The magnetisation dependent photometric parameters, R and A, are determined without absolute measurement of optical intensity View full abstract»

• ### Mechanically alloyed Sm-Fe-N magnets with addition of Ga

Publication Year: 1997, Page(s):3853 - 3855
Cited by:  Papers (3)
| | PDF (396 KB)

The magnetic properties and microstructure of Sm-Fe-N magnets with addition of Ga were studied. It was found that the coercivity initially increased and than decreased when Ga content exceeded 0.5 at%. Ga substituted Fe in the lattice of Sm2Fe17 phase and formed a (Sm,Ga)-rich phase at grain boundaries. Deterioration of the magnetic properties, for Ga contents above 0.5 at%, ... View full abstract»

• ### Interlayer interaction in giant magnetoresistive multilayers

Publication Year: 1997, Page(s):3694 - 3696
Cited by:  Papers (2)
| | PDF (332 KB)

The effect of interlayer interactions on the magnetization process in giant the magnetoresistive multilayers was investigated by studying sheet film samples of multistacked trilayers (MSTLs). First, a NiFe/Cu/Co trilayer was designed to have a magnetic moment ratio of 3:2 for NiFe:Co respectively. The thickness of the copper wall made to be greater than 2.5 nm in order to reduce the exchange coupl... View full abstract»

• ### Curie temperature enhancement in Fe3C nanoparticles made by laser pyrolysis

Publication Year: 1997, Page(s):3736 - 3738
Cited by:  Papers (8)
| | PDF (228 KB)

We report on the magnetic properties of passivated and unpassivated ferromagnetic Fe3C nanoparticles made by laser pyrolysis. The particles have a Curie temperature well above that measured for the bulk material, and a room temperature coercive force of approximately 600 Oe. The nanoparticles offer the possibility of high temperature magnets, sensors, or materials for temperature depend... View full abstract»

• ### Annealing of spin valves with high exchange pinning fields

Publication Year: 1997, Page(s):3544 - 3546
Cited by:  Papers (4)  |  Patents (3)
| | PDF (308 KB)

Practical spin valves for ultra-high density recording heads require pinning fields in excess of 250 Oe to resist demagnetizing effects. One approach to achieving such high fields is through extremely thin pinned layers. Unfortunately, the thin layers of magnetic material are susceptible to annealing effects arising from the moderate temperatures at which spin valves are processed into heads. This... View full abstract»

• ### A recording process simulation for double-layered magneto-optical disk

Publication Year: 1997, Page(s):4149 - 4151
| | PDF (240 KB)

Magnetic Multi-Valued (MMV) recording process is studied by numerical simulation including thermomagnetic effect. A medium, which consists of PtCo capping layer coupled to TbFeCo recording layer, switches the signal of Kerr rotation angle responding to the external field in four levels. The time evolution of generated pattern of recording mark is calculated by extending the previous magneto-optica... View full abstract»

• ### GMR of Co/Cu multilayers with reduced hysteresis and low-field response

Publication Year: 1997, Page(s):3532 - 3534
Cited by:  Papers (6)
| | PDF (300 KB)

We present results of a study on optimization of the magnetoresistance (GMR) response in Co/Cu multilayers (MLs) for Cu layer thickness near the second oscillatory peak. Co/Cu MLs with alternating thick (t(1)Co) and thin (t(2)Co ) Co layers have been prepared in the form of [Cot(1) Co Å/Cu20 Å/Cot(2)Co View full abstract»

• ### Magnetization reversal in SmCo5 nanoparticles

Publication Year: 1997, Page(s):3721 - 3723
Cited by:  Papers (12)
| | PDF (324 KB)

DC demagnetization and magnetic viscosity measurements were made on SmCo5 nanoparticles prepared by ball milling. The field dependence of the magnetic viscosity and irreversible susceptibility, χirr, were found to be identical. With appropriate normalization, χirr(H) for different temperatures scales to a universal function of the reduced magnetic field, H/... View full abstract»

• ### Magnetic damping forces in figure-eight-shaped null-flux coil suspension systems

Publication Year: 1997, Page(s):4230 - 4232
Cited by:  Papers (4)
| | PDF (288 KB)

This paper discusses magnetic damping forces in figure-eight-shaped null-flux coil suspension systems, focusing on the Holloman Maglev rocket system. The paper also discusses simulating the damping plate, which is attached to the superconducting magnet by two short-circuited loop coils interacting with the figure-eight-shaped null-flux coils in the guideway. Closed-form formulas for the magnetic d... View full abstract»

• ### Amorphous wire delay lines used for magnetic field measurements

Publication Year: 1997, Page(s):4041 - 4043
Cited by:  Papers (8)
| | PDF (284 KB)

In this paper we report some results concerning the dependence of the pulsed voltage output on the exciting magnetic field and on the bias magnetic field applied at the exciting or receiving point, for Fe77.5Si7.5B15 amorphous wires used as delay lines. The obtained results show a strong dependence of the pulsed voltage output on the values of the magnetic fields. ... View full abstract»

• ### Head to head domain wall structures in thin magnetic strips

Publication Year: 1997, Page(s):4167 - 4169
Cited by:  Papers (358)  |  Patents (2)
| | PDF (328 KB)

We present calculations of head to head domain wall structures in magnetic strips of Ni80Fe20 with widths, w, ranging from 75 nm to 500 nm and thicknesses, t, from 1 nm to 64 nm. Neglecting magnetocrystalline and magnetostrictive anisotropy energies, minimization of exchange and magnetostatic energy leads to one of two types of domain wall structures: transverse' walls with ... View full abstract»

• ### An experimental study of superconvergence phenomena in finite element magnetics

Publication Year: 1997, Page(s):4137 - 4139
Cited by:  Papers (2)
| | PDF (360 KB)

The usefulness of superconvergence phenomena in practical finite element magnetics is investigated. Reports on the superconvergent characteristics of potential-based derivatives at the Gauss-Legendre quadrature points of first-order elements are tested, and Maxwell stress force calculations based on superconvergent integration contours are examined. Results from two experimental studies indicate t... View full abstract»

• ### A new type 4-legged linear parametric motor with excellent performance

Publication Year: 1997, Page(s):4188 - 4190
Cited by:  Papers (4)
| | PDF (224 KB)

This paper describes the operating principle and the basic characteristics of a new type of linear parametric motor which eliminates a part of the magnetic circuit of the 4-legged linear parametric motor. A double-sided linear motor using the new type of linear parametric motor has an improved thrust-to-mass ratio because part of the magnetic circuit has been eliminated 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