scholarly journals Experimental and theoretical investigations of magnetic anisotropy and magnetic hardening at molecule/ferromagnet interfaces

2018 ◽  
Vol 98 (8) ◽  
Author(s):  
K. Bairagi ◽  
A. Bellec ◽  
V. Repain ◽  
C. Fourmental ◽  
C. Chacon ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Theoretical Investigations ◽  
Magnetic Hardening

Magnetization and Curie Temperature of Ferromagnetic Ultrathin Films: The Influence of Magnetic Anisotropy and Dipolar Interactions (invited)

1991 ◽  
Vol 231 ◽  
Author(s):  
P. Bruno
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Curie Temperature ◽  
Magnetic Anisotropy ◽  
Long Range ◽  
Ultrathin Films ◽  
Experimental Results ◽  
Dipolar Interactions ◽  
Surface Gradient ◽  
Theoretical Investigations

AbstractTheoretical investigations of the magnetization and Curie temperature of ferromagnetic ultrathin films in the presence of magnetic anisotropy and long-range dipolar interactions are presented. The Curie temperature of fcc (001) cobalt ultrathin films is calculated and compared with experimental results on Co/Cu (001) films. The influence of an external magnetic field, and the surface gradient of the magnetization are also discussed.

Lorentz microscopy study of magnetic domain walls in Fe-Cr-Co alloys

1978 ◽  
Vol 36 (1) ◽  
pp. 462-463
Author(s):  
Yalcin Belli
Keyword(s):  
Domain Walls ◽  
Magnetic Domain ◽  
Microscopy Study ◽  
Ferromagnetic Phase ◽  
Stable Phase ◽  
Magnetic Domains ◽  
Lorentz Microscopy ◽  
Magnetic Hardening ◽  
Electron Microscopes ◽  
Co Alloys

Fe-Cr-Co alloys have great technological potential to replace Alnico alloys as hard magnets. The relationship between the microstructures and the magnetic properties has been recently established for some of these alloys. The magnetic hardening has been attributed to the decomposition of the high temperature stable phase (α) into an elongated Fe-rich ferromagnetic phase (α1) and a weakly magnetic or non-magnetic Cr-rich phase (α2). The relationships between magnetic domains and domain walls and these different phases are yet to be understood. The TEM has been used to ascertain the mechanism of magnetic hardening for the first time in these alloys. The present paper describes the magnetic domain structure and the magnetization reversal processes in some of these multiphase materials. Microstructures to change properties resulting from, (i) isothermal aging, (ii) thermomagnetic treatment (TMT) and (iii) TMT + stepaging have been chosen for this investigation. The Jem-7A and Philips EM-301 transmission electron microscopes operating at 100 kV have been used for the Lorentz microscopy study of the magnetic domains and their interactions with the finely dispersed precipitate phases.

TEM Study of Co/Pd and Co/Au Multilayers

1993 ◽  
Vol 51 ◽  
pp. 1036-1037
Author(s):  
A.E.M. De Veirman ◽  
F.J.G. Hakkens ◽  
W.M.J. Coene ◽  
F.J.A. den Broeder
Keyword(s):  
Magnetic Anisotropy ◽  
Ion Beam ◽  
Perpendicular Magnetic Anisotropy ◽  
Optical Recording ◽  
Magnetic Multilayer ◽  
Ion Beam Sputtering ◽  
Cross Sectional ◽  
Transmission Electron ◽  
Beam Sputtering ◽  
Substrate Temperatures

There is currently great interest in magnetic multilayer (ML) thin films (see e.g.), because they display some interesting magnetic properties. Co/Pd and Co/Au ML systems exhibit perpendicular magnetic anisotropy below certain Co layer thicknesses, which makes them candidates for applications in the field of magneto-optical recording. It has been found that the magnetic anisotropy of a particular system strongly depends on the preparation method (vapour deposition, sputtering, ion beam sputtering) as well as on the substrate, underlayer and deposition temperature. In order to get a better understanding of the correlation between microstructure and properties a thorough cross-sectional transmission electron microscopy (XTEM) study of vapour deposited Co/Pd and Co/Au (111) MLs was undertaken (for more detailed results see ref.).The Co/Pd films (with fixed Pd thickness of 2.2 nm) were deposited on mica substrates at substrate temperatures Ts of 20°C and 200°C, after prior deposition of a 100 nm Pd underlayer at 450°C.

Experimental and theoretical investigations concerning the magnetooptic effects in special D-type fibres

2005 ◽  
Vol 129 ◽  
pp. 85-90 ◽  
Author(s):  
K. Barczak ◽  
T. Pustelny ◽  
A. Szpakowski ◽  
M. Błahut
Keyword(s):  
Theoretical Investigations

MAGNETIC ANISOTROPY OF CARBON DOPED Nd2Fe14B

1985 ◽  
Vol 46 (C6) ◽  
pp. C6-305-C6-308 ◽  
Author(s):  
F. Bolzoni ◽  
F. Leccabue ◽  
L. Pareti ◽  
J. L. Sanchez
Keyword(s):  
Magnetic Anisotropy ◽  
Carbon Doped

ON THE MAGNETIC ANISOTROPY OF THE Y2(Co1-xFex)14B COMPOUNDS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-579-C8-580
Author(s):  
N. P. Thuy ◽  
T. D. Hien ◽  
N. M. Hong ◽  
J. J. M. Franse
Keyword(s):  
Magnetic Anisotropy

DIFFERENT CONTRIBUTIONS TO THE MAGNETIC ANISOTROPY IN TUBE-SHAPED CoP ALLOYS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1307-C8-1308
Author(s):  
G. Rivero ◽  
M. Liniers ◽  
J. M. Gonzalez ◽  
E. Ascasibar
Keyword(s):  
Magnetic Anisotropy
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