کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1800128 1524885 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic properties of CuCrZrSe4
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Magnetic properties of CuCrZrSe4
چکیده انگلیسی

We report on structural and magnetic properties of the spinel compound CuCrZrSe4. Rietveld refinement of the powder x-ray diffraction patterns reveals the normal spinel structure AB2Se4, where the Zr4+ and Cr3+ ions occupy the B sites, while the Cu1+ ions are located on A sites. The magnetic susceptibility reveals a Curie–Weiss law above 250 K with a ferromagnetic Curie–Weiss temperature θp=115K and an effective paramagnetic moment μeff=3.75μBμeff=3.75μB per Cr3+ ion corresponding to a g value g=1.94 in fair agreement with electron spin resonance (ESR) measurements. Below 100 K the magnetization deviates from the Curie–Weiss behaviour and splits into field-cooled (FC) and zero-field-cooled (ZFC) branches. A second anomaly in the magnetization close to 10 K, which is also visible in the ESR parameters, indicates the transition into a spin-glass state due to the random distribution of Zr and Cr ions on the B site. This is supported by the frequency dependence of the anomaly detected by AC susceptibility measurements.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 334, May 2013, Pages 130–135
نویسندگان
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