Static critical behavior of the ferromagnetic transition in LaMnO3.14 manganite

Дата и время публикации : 2000-10-06T17:36:34Z

Авторы публикации и институты :
R. S. Freitas
C. Haetinger
P. Pureur
J. A. Alonso
L. Ghivelder

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: Presented at ICM 2000 conference. Accepted for publication at J. Magn. Magn. Mater
Первичная категория: cond-mat.stat-mech

Все категории : cond-mat.stat-mech, cond-mat.str-el

Краткий обзор статьи: The ferromagnetic phase transition in LaMnO3.14 is investigated by measuring the dc magnetization as a function of magnetic field and temperature. Modified Arrott plot and Kouvel Fisher analysis yield estimates for the critical exponents beta, and gama, with values between that predicted for the Heisenberg model and mean field theory. At low fields we found an anomalous small value of beta, indicating that the critical behavior is influenced by the range of magnetic fields used.

Category: Physics