کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1625708 | 1516433 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A μ SR magnetic study of UNiGe
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We have carried out μ SR spectroscopy on polycrystalline UNiGe between 2âK and 100âK. The existence of two magnetic transitions at TN=51 âK and T1=41.5 âK is confirmed. The μ SR spectra clearly reveal that the magnetic state between 51âK and 41.5âK is an incommensurate spin structure ruling out a spin-slip structure which had been considered an alternative. Below 41.5âK the spectra are compatible with simple antiferromagnetic order. The local field for Tâ0 is Bμ=170 âmT, a comparatively low value, indicating a rather small uranium ordered moment. When going from the commensurate to the incommensurate structures at T1 a sudden reduction in local field by 23% occurs reflecting an equal change in ordered moment. The transition at T1 is sharp, but TN extends over roughly 5âK. The antiferromagnetic spin structure exhibits persistent spin fluctuations in the limit Tâ0, implying the presence of some additional spin interactions which tries to suppress long-range magnetic order.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 441, Issues 1â2, 30 August 2007, Pages 11-18
Journal: Journal of Alloys and Compounds - Volume 441, Issues 1â2, 30 August 2007, Pages 11-18
نویسندگان
G.M. Kalvius, D.R. Noakes, S. El-Khatib, E.J. Ansaldo, C.E. Stronach, E. Brück, H. Nakotte,