کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1506317 993789 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A neutron diffraction study of structural and magnetic properties of monoclinic Cr5Te8
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
A neutron diffraction study of structural and magnetic properties of monoclinic Cr5Te8
چکیده انگلیسی

Neutron time-of-flight diffraction experiments were carried out on monoclinic m-Cr5Te8 in the temperature range from 1.5 to 300 K. A ferromagnetic long-range order occurs at around 180 K with magnetic moments being directed along the c-axis. Below 70 K a canted magnetic structure with a ferromagnetic component along the c-axis and an antiferromagnetic component in the ab-plane is observed. The temperature dependencies of the lattice parameters and of the thermal expansion tensor are clearly correlated to bulk and microscopic magnetic properties of the compound. With decreasing temperature the c-axis shows a pronounced contraction whereas the a- and b-axis exhibits a slight expansion. As a consequence of this anisotropic behaviour the Cr–Cr distance between Cr atoms of neighboured face-sharing CrTe6 octahedra is reduced with decreasing temperature indicating stronger bonding interactions.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Sciences - Volume 10, Issue 8, August 2008, Pages 1099–1105
نویسندگان
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