Journal•
Magnetism and Magnetic Materials
About: Magnetism and Magnetic Materials is an academic journal. The journal publishes majorly in the area(s): Magnetization & Anisotropy. Over the lifetime, 604 publications have been published receiving 6891 citations.
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TL;DR: In this paper, the authors introduce magnetostatics and magnetism of localized electrons on the atom, and apply it to spin electronics and magnetic recording, as well as applications of hard magnets.
Abstract: 1. Introduction 2. Magnetostatics 3. Magnetism of electrons 4. Magnetism of localized electrons on the atom 5. Ferromagnetism and exchange 6. Antiferromagnetism and other magnetic order 7. Micromagnetism, domains and hysteresis 8. Nanoscale magnetism 9. Magnetic resonance 10. Experimental methods 11. Magnetic materials 12. Applications of soft magnets 13. Applications of hard magnets 14. Spin electronics and magnetic recording 15. Special topics Appendixes Index.
3,137 citations
TL;DR: In this article, the reflectivity of single crystals of Gd chalcogenides and of LaS has been measured at room temperature in the spectral region from 40 μm to 12 eV.
Abstract: The reflectivity of single crystals of Gd chalcogenides and of LaS has been measured at room temperature in the spectral region from 40 μm to 12 eV The reflectivity data have been analyzed in terms of the optical constants by means of the Kramers‐Kronig relation The dielectric function has been decomposed into contributions of free and bound electrons Hence the plasma resonance of the conduction electrons and their effective mass have been determined The position in energy of the 4f level in GdS has been found at 9 eV below EF by comparing the interband transitions of GdS and LaS The stronger damping of the conduction electrons of GdS compared to LaS suggests the presence of a spin‐disorder scattering in GdS already at 300 K
278 citations
TL;DR: In this article, an analytical model of saturation NRZ recording is used to calculate transition lengths in media with hysteresis curves which are not square, by assuming the transition has an arctangent shape.
Abstract: An analytical model of saturation NRZ recording is used to calculate transition lengths in media with hysteresis curves which are not square. The maximum gradient of transition magnetization is computed, including the field gradients of the major hysteresis curve and the spatial gradients of the recording‐head field and transition demagnetization fields, by assuming the transition has an arctangent shape. The model is an approximation to, and is compared with, numerical self‐consistent analyses.
176 citations
TL;DR: In this paper, the authors derived an equation of motion for a flexed domain wall in the limit of small damping and small field, and a general method of evaluating the nonlinear mobility of a wall with small dampness and small fields is given.
Abstract: Equations of motion for a flexed domain wall are derived. Velocity dependence of wall thickness is neglected. The orientation angle of the wall‐moment is canonically conjugate to the wall position. Walker's uniform‐motion solution is stable. At higher fields, the wall oscillates. A general method of evaluating the non‐linear mobility in the limit of small damping and small field is given.
75 citations
TL;DR: The magnetic properties during tempering of Fe 30∼50wt% Cr − 10 ∼30wt% Co alloys, which consist of bcc high-temperature phase (α) obtained by quenching from 1300°C, have been measured as mentioned in this paper.
Abstract: The magnetic properties during tempering of Fe‐ 30∼50wt% Cr‐ 10 ∼30wt% Co alloys, which consist of bcc high‐temperature phase (α) obtained by quenching from 1300°C, have been measured. Alloys in a certain range of composition showed desirable permanent‐magnetic properties by a step‐tempering following a thermomagnetic treatment. An Fe‐ 31wt% Cr‐ 23wt% Co alloy, which was tempered at 600°C for 2 hrs and subsequently at 580°C for 4 hrs after an isothermal treatment at 640°C for 1/2 hr in a magnetic field of 4000 Oe, had Br=11500 G, bHc=660 Oe and (BH)max= 4.1 MGOe. In addition to these desirable magnetic properties, the alloys could be forged at above 1000 °C. Moreover, they were ductile in quenched state and could be also cold‐worked. It may be assumed that the high coercive force arises from fine iron‐rich precipitates produced by a spinodal reaction.
75 citations