scholarly journals Spin hydrodynamics in amorphous magnets

2018 ◽  
Vol 98 (5) ◽  
Author(s):  
Héctor Ochoa ◽  
Ricardo Zarzuela ◽  
Yaroslav Tserkovnyak
Keyword(s):  
Amorphous Magnets

FEATURES OF THE MAGNETIC STATE IN AMORPHOUS RE–TM AND RE–TM–B MAGNETS (review)

2021 ◽  
pp. 43-58
Author(s):  
R.B. Morgunov ◽  
◽  
D.V. Korolev ◽  
R.A. Valeev ◽  
V.P. Piskorskiy ◽  
...  
Keyword(s):  
Rare Earth ◽  
Amorphous Alloys ◽  
Magnetic State ◽  
Rare Earth Metals ◽  
Earth Metal ◽  
Spin Reorientation ◽  
Heavy Rare Earth ◽  
Temperature Dependences ◽  
Magnetic States ◽  
Amorphous Magnets

Provides an overview of the magnetism features of amorphous magnets of the RE–TM and RE–TM–B alloys (RE – rare earth metal, TM – transition metal, B – boron). Magnetic states in amorphous alloys, the effect of the single-ionic anisotropy of heavy rare-earth metals on local disorder and spin frustrations in an amorphous body, and some spin-reorientation transitions observed in such compounds are presented. It is shown that the identification of the spin-glass state can be achieved by detecting specific features on the field and temperature dependences of the magnetic moment and magnetic susceptibility of the sample.

Interaction of Alpha Particle Beams with Fe-Based and FeNi-Based Glassy Ferromagnets

1995 ◽  
Vol 396 ◽  
Author(s):  
Monica Sorescu ◽  
D. Barb
Keyword(s):  
Alpha Particle ◽  
Crystallization Process ◽  
Morphological Changes ◽  
Particle Beam ◽  
Particle Beams ◽  
Magnetic Texture ◽  
Ferromagnetic Alloys ◽  
Sample Composition ◽  
Radiation Induced ◽  
Amorphous Magnets

AbstractSamples of Fe78B13Si9 and Fe40Ni38Mo4B18 metallic glasses were irradiated with alpha particle beams (W=2.8 MeV) using radiation doses of 1016 and 1017 cm-2. Irradiation-induced effects on the magnetic texture and phase composition of alloy samples were studied by Mössbauer spectroscopy. Related morphological changes and resultant crystalline precipitates were characterized by scanning electron microscopy. The evolution of phases and microstructure during the radiation-induced amorphous-to-crystalline transformation was found to depend on the particle flux and sample composition. The lowest radiation dose employed was found to be more effective in inducing amorphous-to-crystalline transformations in both ferromagnetic alloys studied. In addition, the FeNi-based amorphous system investigated was found to be more stable than the Fe-based metallic glass, exposed to the same particle-beam irradiation conditions. By stimulating unconventional pathways for the crystallization process, the interaction of alpha particle beams with glassy ferromagnets offers unique opportunities to understand the fundamentals of nucleation and growth in amorphous magnets.

MÖSSBAUER STUDIES OF AMORPHOUS MAGNETS

1971 ◽  
Vol 32 (C1) ◽  
pp. C1-224-C1-225 ◽  
Author(s):  
A. J. F. BOYLE ◽  
G. M. KALVIUS ◽  
D. M. GRUEN ◽  
J. R. CLIFTON ◽  
R. L. McBETH
Keyword(s):  
Mössbauer Studies ◽  
Amorphous Magnets

LONGITUDINAL EXCITATIONS IN AMORPHOUS MAGNETS

1980 ◽  
Vol 41 (C8) ◽  
pp. C8-714-C8-717
Author(s):  
M. A. Continentino
Keyword(s):  
Amorphous Magnets

Magnetic Sans of Nanoparticles and Complex Systems

2021 ◽  
pp. 172-222
Author(s):  
Andreas Michels
Keyword(s):  
Boundary Value Problem ◽  
Complex Systems ◽  
Spin Glasses ◽  
Boundary Value ◽  
Vortex State ◽  
Amorphous Magnets ◽  
Analytical Expressions ◽  
Complete Specification

This chapter provides an overview on the magnetic SANS of nanoparticles and complex systems, which include ferrofluids, magnetic steels, and spin glasses and amorphous magnets. The underlying assumptions of the conventional particle-matrix-based model of magnetic SANS, which assumes uniformly magnetized domains, characteristic e.g., for superparamagnets, are discussed and we provide a complete specification of the micromagnetic boundary-value problem. First attempts to provide analytical expressions for the vortex-state-related magnetic SANS of thin circular discs are considered.

A Contribution to the Mean-Field Analysis of Amorphous Magnets

1993 ◽  
Vol 179 (2) ◽  
pp. 551-556 ◽  
Author(s):  
Y. Millev ◽  
M. Fähnle
Keyword(s):  
Mean Field ◽  
Field Analysis ◽  
The Mean ◽  
Amorphous Magnets
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