Zero-field-cooled and field-cooled magnetizations and magnetic susceptibility of itinerant ferromagnet SrRuO3
Hou Deng-Lu (侯登录)ab, Jiang En-Yong (姜恩永)a, Bai Hai-Li (白海力)a
a Department of Applied Physics, Tianjin University, Tianjin 300072, China; b Department of Physics, Hebei Normal University, Shijiazhuang 050016, China
Abstract Zero-field-cooled (ZFC) magnetization, field-cooled (FC) magnetization, ac magnetic susceptibility and major hysteresis loops of itinerant ferromagnet SrRuO3 have been measured at magnetic ordering temperatures ranging from 5 to 160 K. An empirical model is proposed to calculate the measured ZFC magnetization. The result indicates that the calculated ZFC magnetization compares well with the measured one. Based on the generalized Preisach model, both the ZFC and FC curves are reproduced by numerical simulations. The critical temperature and critical exponents are determined by measuring the ac magnetic susceptibility in different bias magnetic fields at temperatures in the vicinity of the point of phase transition.
Received: 14 December 2001
Revised: 25 March 2002
Accepted manuscript online:
PACS:
75.60.Ej
(Magnetization curves, hysteresis, Barkhausen and related effects)
(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 50072015, 50172033).
Cite this article:
Hou Deng-Lu (侯登录), Jiang En-Yong (姜恩永), Bai Hai-Li (白海力) Zero-field-cooled and field-cooled magnetizations and magnetic susceptibility of itinerant ferromagnet SrRuO3 2002 Chinese Physics 11 827
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