کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1803005 1024608 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Properties of exchange interaction in Yb3Fe5O12 under extreme conditions
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Properties of exchange interaction in Yb3Fe5O12 under extreme conditions
چکیده انگلیسی

In Yb3Fe5O12, the exchange effective field can be expressed as Heff=−λ·MFe=−λχeff·He=−γ·He where γ is named as the exchange field parameter and He is the external magnetic field. Then, in this paper, by the discussions on the characteristics of the exchange field parameter γ, the properties of exchange interaction in ytterbium iron garnet (Yb3Fe5O12) are analyzed under extreme conditions (high magnetic fields and low temperatures). Our theory suggests that the exchange field parameter γ is the function of the temperatures under different external magnetic fields, and γ=a+b·T+c·T2, where the coefficients a, b, c are associated with the external magnetic fields and the magnetized directions. Thus, the temperature-dependence, field-dependence and anisotropic characteristics of the exchange interaction in Yb3Fe5O12 are revealed. Also, excellent fits to the available experiments are obtained.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 19, October 2009, Pages 3307–3310
نویسندگان
, ,