Journal ArticleDOI
Magnetic Properties of ZrZn 2 —Itinerant Electron Ferromagnet
Shinji Ogawa,Nobuhiko Sakamoto +1 more
TLDR
The magnetization of ZrZn 2 has been measured as a function of magnetic field up to 48 kOe and of temperature from 2.0°K to 380°K as discussed by the authors.Abstract:
The magnetization of ZrZn 2 has been measured as a function of magnetic field up to 48 kOe and of temperature from 2.0°K to 380°K. The intrinsic magnetization extrapolated to 0°K increases strongly with external field. The magnetization at low field is found to vary as T 2 at low temperatures. The Curie temperature for a typical sample is 17.8°K, whereas the hysteresis loop is observed up to 30°K. A comment on the Curie temperature quoted in literatures has been made. The difference in magnetic properties among different samples has been noticed. The itinerant electron model of ferromagnetism can account for qualitatively the observed magnetic properties, whereas the localized-spin model proves inappropriate for this material.read more
Citations
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Journal ArticleDOI
Itinerant electron magnetism
TL;DR: The many theoretical studies of the various magnetic, thermal and magnetoelastic properties for paramagnetic and ferromagnetic transition metals and alloys in the simple itinerant electron model are reviewed in this article.
Journal ArticleDOI
Exchange‐Enhanced Paramagnetism and Weak Ferromagnetism in the Ni3Al and Ni3Ga Phases; Giant Moment Inducement in Fe‐Doped Ni3Ga
TL;DR: In this paper, the shape of the reciprocal magnetic susceptibility vs temperature curves measured between 4.2° and 300°K is of the Stoner type and suggests for these alloys a density-of-states curve varying appreciably in the Fermi region leading to a low effective energy.
Journal ArticleDOI
Very Weak Itinerant Ferromagnets; Application to ZrZn2
TL;DR: In this paper, the authors considered the itinerant electron model in the limit of very low exchange splitting energies and derived the magnetic isotherms giving M(H, T) to cover a wide range of fields and temperatures.
Journal ArticleDOI
On the Origin of the Curie-Weiss Law of the Magnetic Susceptibility in Itinerant Electron Ferromagnetism
TL;DR: The origin of the Curie-Weiss law of the magnetic susceptibility universally observed in ferromagnetic materials is discussed from a point of view that the local spin fluctuation amplitude is almost conserved as discussed by the authors.
References
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Criterion for Ferromagnetism from Observations of Magnetic Isotherms
TL;DR: In this article, a criterion for determining the onset of ferromagnetism in a material as its temperature is lowered from a region in which the linearity of its magnetic moment versus field isotherm gives an indication of paramagnetisms.
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Magnetic Properties of Some Orthoferrites and Cyanides at Low Temperatures
TL;DR: The magnetization of rare earth orthoferrites and related compounds, and of some iron-group cyanides, has been investigated at temperatures between room temperature and 1.3\ifmmode^\circ\else\text degree\fi{}K.
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