Low Temperature Physics: 38, 669 (2012); https://doi.org/10.1063/1.4736616 (2 pages)
Fizika Nizkikh Temperatur: Volume 38, Number 7 (July 2012), p. 842-844    ( to contents , go back )

Ordering in a narrow-band magnetic metal with exchange interaction

E.S. Orel

Kharkiv National Academy of Municipal Economy, ul. Revolution, 12, Kharkov, 61002, Ukraine
E-mail: jeamesorel@mail.ru
pos Анотація:

Received May 10, 2012


The temperature of magnetic ordering ΘC of systems with a double exchange is calculated by using the model of interacting spin waves. A comparative analysis is performed with the calculations by the model of molecular field and the spin-wave one. A maximum of the magnetic transition temperature ΘC is obtained for electronic concentration x = 0.35, that agrees with the experiment (x = 0.33) better than the calculations of ΘC in the model of molecular field and the spinwave one.

PACS: 75.10.Lp Band and itinerant models;
PACS: 75.30.–m Intrinsic properties of magnetically ordered materials;
PACS: 75.80.+q Magnetomechanical effects, magnetostriction.

Key words: magnon, relative magnetized, model of the dynamic molecular field, Green function.

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