کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1814368 | 1025649 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Field suppression of the modulated phase of Ce2Pd2Sn
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Low temperature magnetic (M) and thermal (CP) properties of the intermetallic compound Ce2Pd2Sn have been investigated at zero and different magnetic fields. Two transitions were recognized at TC=2.1K and TM=4.8K, with latter nearly coinciding with the extrapolated Curie-Weiss temperature θP=4.5K. The Curie factor evaluated from Tâ¥TM, is â2μB. The positive value of θP, the triangular coordination of the magnetic (Ce) atoms and the weak effect of applied magnetic field, reveal that TM cannot be considered as a canonic antiferromagnetic transition like claimed in the literature. M(T) measurements under moderate magnetic fields (0â¤Bâ¤2.5kOe) show TC(B) increasing while TM(B) is practically not affected. Both transition merge in a critical point at Tcr=(4.3±0.3)K for Bcr=(2.1±0.3)kOe, where the intermediate phase is suppressed. At TC=2.2K, the cusp of a first order transition is observed in CP(T). According to the proposed ferromagnetic ground state, it is followed by a CP(T)âT3/2exp(-Eg/T) dependence, with a gap of anisotropy Egâ7K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 404, Issue 19, 15 October 2009, Pages 2930-2933
Journal: Physica B: Condensed Matter - Volume 404, Issue 19, 15 October 2009, Pages 2930-2933
نویسندگان
M. Gómez Berisso, J.G. Sereni, A. Braghta, G. Schmerber, B. Chevalier, J.P. Kappler,