Magnetization processes of iron whiskers in small magnetic fields

1979 ◽  
Vol 20 (2) ◽  
pp. 159-161 ◽  
Author(s):  
H. H. Mende ◽  
Th. Kleinefeld
Keyword(s):  
Magnetic Fields ◽  
Iron Whiskers ◽  
Magnetization Processes

Magnetization Processes and Eddy Currents in Iron Whiskers

1972 ◽  
Author(s):  
A. S. Arrott ◽  
B. Heinrich ◽  
D. S. Bloomberg
Keyword(s):  
Eddy Currents ◽  
Iron Whiskers ◽  
Magnetization Processes

Magnetostriction and magnetization processes in Hf1−xTaxFe2 under pulsed high magnetic fields

1986 ◽  
Vol 54-57 ◽  
pp. 885-886 ◽  
Author(s):  
G. Kido ◽  
Y. Tadakuma ◽  
Y. Nakagawa ◽  
Y. Nishihara ◽  
Y. Yamaguchi
Keyword(s):  
Magnetic Fields ◽  
High Magnetic Fields ◽  
Magnetization Processes

Domain Configurations, Bloch Walls, and Magnetization Processes in Iron Whiskers from D.C. to 200 kHz. Theory and Experiment. I

1972 ◽  
Vol 50 (7) ◽  
pp. 710-720 ◽  
Author(s):  
B. Heinrich ◽  
A. S. Arrott
Keyword(s):  
Eddy Currents ◽  
Elastic Membrane ◽  
Magnetization Measurements ◽  
Wide Range ◽  
Elastic Wall ◽  
Iron Whiskers ◽  
Magnetization Processes ◽  
Theory And Experiment

Bloch walls in iron whiskers have been studied by direct magnetization measurements. Of several types of domain configurations the simplest, the Landau structure, is readily identified from the a.c. permeability. The behavior of this structure over a wide range of frequencies is accounted for by a model which treats the wall as an elastic membrane attached to two springs on its ends. The stiffness is shown to be magnetostatic in origin. The elastic wall is shown to be damped in its motion by eddy currents. The qualitative aspects of the behavior are well accounted for and some numerical consistencies are found.

Domain Configurations, Bloch Walls and Magnetization Processes in Iron Whiskers from D.C. to 200 kHz. Theory and Experiment II

1973 ◽  
Author(s):  
A. S. Arrott ◽  
B. Heinrich ◽  
D. S. Bloomberg ◽  
Hugh C. Wolfe ◽  
C. D. Graham ◽  
...  
Keyword(s):  
Iron Whiskers ◽  
Magnetization Processes ◽  
Theory And Experiment

Magnetization processes in samples with modulated anisotropy under the action of nonuniform magnetic fields

1995 ◽  
Vol 78 (6) ◽  
pp. 3961-3964 ◽  
Author(s):  
A. García ◽  
E. López ◽  
C. Aroca ◽  
M. C. Sánchez ◽  
P. Sánchez
Keyword(s):  
Magnetic Fields ◽  
Magnetization Processes

Calculated Coronal Magnetic Fields and Their Comparison with the Coronal Structures as Observed during Five Solar Eclipses

1994 ◽  
Vol 144 ◽  
pp. 559-564
Author(s):  
P. Ambrož ◽  
J. Sýkora
Keyword(s):  
Magnetic Field ◽  
Solar Cycle ◽  
Magnetic Fields ◽  
Solar Corona ◽  
Coronal Magnetic Field ◽  
Coronal Magnetic Fields ◽  
Solar Eclipses ◽  
Coronal Structures

AbstractWe were successful in observing the solar corona during five solar eclipses (1973-1991). For the eclipse days the coronal magnetic field was calculated by extrapolation from the photosphere. Comparison of the observed and calculated coronal structures is carried out and some peculiarities of this comparison, related to the different phases of the solar cycle, are presented.

Radio Measurements of Coronal Magnetic Fields

1994 ◽  
Vol 144 ◽  
pp. 21-28 ◽  
Author(s):  
G. B. Gelfreikh
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Solar Corona ◽  
Active Regions ◽  
High Sensitivity ◽  
Coronal Magnetic Field ◽  
Transverse Magnetic ◽  
Radio Sources ◽  
Radio Waves ◽  
Solar Active Regions

AbstractA review of methods of measuring magnetic fields in the solar corona using spectral-polarization observations at microwaves with high spatial resolution is presented. The methods are based on the theory of thermal bremsstrahlung, thermal cyclotron emission, propagation of radio waves in quasi-transverse magnetic field and Faraday rotation of the plane of polarization. The most explicit program of measurements of magnetic fields in the atmosphere of solar active regions has been carried out using radio observations performed on the large reflector radio telescope of the Russian Academy of Sciences — RATAN-600. This proved possible due to good wavelength coverage, multichannel spectrographs observations and high sensitivity to polarization of the instrument. Besides direct measurements of the strength of the magnetic fields in some cases the peculiar parameters of radio sources, such as very steep spectra and high brightness temperatures provide some information on a very complicated local structure of the coronal magnetic field. Of special interest are the results found from combined RATAN-600 and large antennas of aperture synthesis (VLA and WSRT), the latter giving more detailed information on twodimensional structure of radio sources. The bulk of the data obtained allows us to investigate themagnetospheresof the solar active regions as the space in the solar corona where the structures and physical processes are controlled both by the photospheric/underphotospheric currents and surrounding “quiet” corona.

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