Invar effect and noncollinear magnetism in FeCu alloys
نویسندگان
چکیده
منابع مشابه
Invar effect in Pu-Ga alloys
We show that the anomalous thermal expansion behavior of Pu-Ga alloys can be explained by an invar effect, which is modeled by assuming the thermal transfer of Pu atoms from a lower-energy, higher-volume δ1 state to a higher-energy, lowervolume δ2 state. From a fit to the available neutron diffraction data on the lattice constants of Pu-Ga alloys, the energy separation of these states is found ...
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Recently, a great deal of effort has been focused on developing the so called fully unconstrained approach to noncollinear magnetism. This approach allows the magnetization density within a material to be calculated as a continuous vector variable of position, as opposed to using the atomic moment approximation (AMA) where a fixed quantization direction is assumed for a volumefilling sphere s...
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متن کامل0 ” Cold Melting ” of Invar Alloys
An anomalously strong volume magnetostriction in Invars may lead to a situation when at low temperatures the dislocation free energy becomes negative and a multiple generation of dislocations becomes possible. This generation induces a first order phase transition from the FCC crystalline to an amorphous state, and may be called " cold melting ". The possibility of the cold melting in Invars is...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 2009
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.3063070