Showing papers in "Journal of Magnetism and Magnetic Materials in 1991"

TL;DR: In this article, the magnetic and magneto-transport properties of Co/Cu multilayers prepared by sputtering were studied and a giant magnetoresistance was observed in the half-periods with antiferromagnetic interlayer coupling.

TL;DR: In this article, the effect of growth conditions on the magnetic anisotropy of Co/Pd multilayers was studied and it was shown that K s is mainly of the Neel type.

TL;DR: The magnetic properties of Co/Pt multilayers, in particular anisotropy and coercivity, are very sensitive to the Co layer thickness and less dependent on the Pt layer thickness as mentioned in this paper.

TL;DR: In this paper, the present status of the theory of itinerant electron magnetism is outlined with particular emphasis on the developments in the recent two decades, characterized by substantial advances in the spin fluctuations.

TL;DR: In this paper, local spin density functional (LSDF) ab initio electronic structure calculations played a key role in the development of this exciting field by not only providing a clearer understanding of the experimental observations but also predicting new systems with desired properties.

TL;DR: In this article, a reorientation of the focus of micromagnetic theory towards a dynamical treatment of the magnetization processes in non-uniformly magnetized particles is discussed.

TL;DR: In this paper, the authors present a review of the development of rare earth-cobalt-based permanent magnets from basic science studies on rare earth transition metal alloys in the 1960's to today's broad spectrum of commercial magnet types and their applications.

TL;DR: In this article, the influence of melt-spinning processing conditions on the grain size in the nanocrystalline range and on the magnetic properties of Nd-Fe-B alloys with small silicon additions was investigated.

TL;DR: A review of the occurrence and composition of ternary rare earth compounds RT12−xMx based on the tetragonal ThMn12 structure is given in this paper, where the important role played by the intersublattice coupling on the magnetocrystalline anisotropy of these materials is stressed.

TL;DR: In this paper, the spin-valve effect was observed in the case of soft ferromagnetic layers separated by nonmagnetic metallic layers in a variety of systems, where the in-plane resistivity of sandwiches was investigated in terms of the relative angle between their magnetizations.

TL;DR: In this paper, the current status of random field systems, particularly those with Ising symmetry, is discussed, and the critical behavior in three dimensions is not very well understood, both in the critical region and the low temperature phase.

TL;DR: Carbides of composition R 2 Fe 17 C x (x ≈2; R = Y, Sm) are formed by reaction of a powder of the 2:17 parent alloy in a hydrocarbon gas (methane, acetylene, butane) at around 550°C as discussed by the authors.

TL;DR: In this article, the authors review the fundamental magnetic and magnetostrictive properties of the RFe 2 Laves phases, focusing especially on the complex behavior of the anisotropy and the success of crystal field theory in explaining it.

TL;DR: In this paper, the authors present results of recent total energy calculations as a function of the magnetic moment and atomic volume E (M, V ) and analyze Invar-relevant physical properties for a broad variety of fcc ferromagnetic and antiferromagnetic 3D-alloy systems as well as the electron concentration, and give an answer to the question why close to the Invar range martensitic fcc-bcc transitions occur.

TL;DR: The spin-polarized band calculations for the iron nitrides, Fe 3 N, Fe 4 N and Fe 16 N 2, have been performed with use of the LMTO-ASA method in the frame of local spin density functional formalism.

TL;DR: In this paper, a number of stannides were synthesized from the elements and their magnetic properties were studied in the temperature range 4.2 K < T < 900 K. All the compounds are isotypic and crystallize in the HfFe6Ge6 type structure.

TL;DR: In this paper, the magnetic and non-magnetic properties of magnetic recording media have been discussed and a detailed description of their current embodiment in particles of cobalt-modified iron oxides, chromium dioxide, barium ferrite and metals and in thin films of metals, alloys and oxides.

TL;DR: In this paper, the authors place Nd-Fe-B in the historical context of permanent magnet evolution, summarize the intrinsic properties of the R 2 Fe 14 B phases, and discuss the properties of practical Nd Fe-B magnets produced by the two methods in present commercial use.

TL;DR: In this paper, the role of the main parameters involved in the giant magnetoresistance: thicknesses, interface roughness and temperature were discussed, and new experimental data on Fe(001)/Cr(001) superlattices were discussed.

TL;DR: In this article, the growth and magnetic properties of films of fcc cobalt on Cu(100) substrates have been characterized by a multitechnique approach, and the films are ferromagnetically ordered in-plane at temperatures below Tc.

TL;DR: In this article, a mean field analysis for a ferrimagnetic mixed spin system consisting of spin- 1 2 and spin-1 with a crystal-field interaction D is presented, and a compensation point induced by a negative value of D in a restricted region is obtained.

TL;DR: In this article, optical and magneto-optical spectra of TM/Co multilayers with constant Co layer thickness dCo ≈ 1.0nm and transition metal thickness dTM = 0-8nm have been investigated using optical and magnetic spectroscopy.

TL;DR: In this article, the growth of bcc Fe, Cu, Pd, Ag, and Au trilayers was monitored and characterized by RHEED patterns and intensity oscillations, and it was shown that Cu and Pd interlayers exhibit long range antiferromagnetic coupling.

TL;DR: In this paper, the structural, electronic and magnetic properties of Co/Pd(111) and Co-Pt(1) systems were investigated using the local density total energy full potential linearized augmented plane wave (FLAPW) method.

TL;DR: In this article, a simple model based on Miedema's "macroscopic atom" model for cohesion in metals was proposed, from which trends in the magnetocrystalline anisotropy can be understood qualitatively.

TL;DR: In this article, the effects of rare-earth iron intermetallic compounds have been discussed with reference to three systems: R 2 Fe 17 N 3-δ, R 2Fe 17 C 3 -δ, and R(Fe 11 Ti)N 1-α.

TL;DR: In this article, the deterioration of coercivity was associated with a certain mean grain size D cr of the sintered material, which was shifted to larger values of JHc, which did not depend on the milling-ball diameter.

TL;DR: A large magnetoresistance ratio ( ΔR / R = 2.7% at room temperature and 3.5% at 77 K) was observed for the first time in 82Ni-Fe/Al-Al 2 O 3 /Co junction as discussed by the authors.

TL;DR: In this paper, the effects of variable underlayer and magnetic layer thicknesses were investigated in Co metal alloy thin films and the results indicated a strong correlation between the magnitude of cooperative switching and measured signal-to-noise.

TL;DR: A survey of the magnetic properties of rare earth intermetallic compounds investigated during the last fifteen years is presented in this article, where four main topics concerning normal rare earths are emphasized.