Magnetization and magnetic entropy change of a three-dimensional isotropic ferromagnet near the Curie temperature in the random phase approximation

• Published in: Physica. B, Condensed matter Vol. 416; pp. 29 - 32
• Main Authors: Kokorina, E.E., Medvedev, M.V.
• Format: Journal Article
• Language: English; Russian
• Published: Kidlington Elsevier B.V 01.05.2013; Elsevier
• Subjects: Approximation; Critical exponent; Curie temperature; Entropy; Exponents; Ferromagnet; Ferromagnetism; Magnetic fields; Mathematical analysis; Random phase approximation; Three dimensional; Critical exponent; Ferromagnet; Random phase approximation

The behavior of a three-dimensional isotropic Heisenberg ferromagnet in the presence of a magnetic field H is investigated in the random phase approximation (RPA) near the Curie temperature Tc. It is shown that the magnetization M at the Curie temperature Tc is described by the law M(T=Tc)∼H1/5 and...