Erratum: Theory of magnetic domain dynamics in uniaxial materials

1975 ◽  
Vol 46 (5) ◽  
pp. 2338-2338
Author(s):  
J. A. Cape ◽  
W. F. Hall ◽  
G. W. Lehman
1974 ◽  
Vol 45 (8) ◽  
pp. 3572-3581 ◽  
Author(s):  
J. A. Cape ◽  
W. F. Hall ◽  
G. W. Lehman

2020 ◽  
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J Herrero-Albillos ◽  
A A Uenal ◽  
S Valencia ◽  
...  

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J. Xu ◽  
C. Tang ◽  
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1998 ◽  
Vol 22 (S_2_MORIS_97) ◽  
pp. S2_33-36
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BAKURI LANCHAVA ◽  
KOJI MATSUMOTO ◽  
HORST HOFFMANN

2002 ◽  
Vol 15 (1-4) ◽  
pp. 409-416
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2003 ◽  
Vol 23 (Supplement1) ◽  
pp. 263-266
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Hisashi ENDO ◽  
Seiji HAYANO ◽  
Yoshifuru SAITO ◽  
Kiyoshi HORII

Author(s):  
J.N. Chapman ◽  
P.E. Batson ◽  
E.M. Waddell ◽  
R.P. Ferrier

By far the most commonly used mode of Lorentz microscopy in the examination of ferromagnetic thin films is the Fresnel or defocus mode. Use of this mode in the conventional transmission electron microscope (CTEM) is straightforward and immediately reveals the existence of all domain walls present. However, if such quantitative information as the domain wall profile is required, the technique suffers from several disadvantages. These include the inability to directly observe fine image detail on the viewing screen because of the stringent illumination coherence requirements, the difficulty of accurately translating part of a photographic plate into quantitative electron intensity data, and, perhaps most severe, the difficulty of interpreting this data. One solution to the first-named problem is to use a CTEM equipped with a field emission gun (FEG) (Inoue, Harada and Yamamoto 1977) whilst a second is to use the equivalent mode of image formation in a scanning transmission electron microscope (STEM) (Chapman, Batson, Waddell, Ferrier and Craven 1977), a technique which largely overcomes the second-named problem as well.


Author(s):  
Yalcin Belli

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.


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