کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8150998 | 1524432 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Single crystal study of the layered heavy fermion compounds Ce2PdIn8, Ce3PdIn11, Ce2PtIn8 and Ce3PtIn11
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Single crystal study of the layered heavy fermion compounds Ce2PdIn8, Ce3PdIn11, Ce2PtIn8 and Ce3PtIn11 Single crystal study of the layered heavy fermion compounds Ce2PdIn8, Ce3PdIn11, Ce2PtIn8 and Ce3PtIn11](/preview/png/8150998.png)
چکیده انگلیسی
We report on single crystal growth and crystallographic parameters results of Ce2PdIn8, Ce3PdIn11, Ce2PtIn8 and Ce3PtIn11. The Pt-systems Ce2PtIn8 and Ce3PtIn11 are synthesized for the first time. All these compounds are member of CenTmIn3n+2m (n=1, 2,..; m=1, 2,.. and T= transition metal) to which the extensively studied heavy fermion superconductor CeCoIn5 belongs. Single crystals have been grown by an In self-flux method. Differential scanning calorimetry studies were used to derive optimal growth conditions. Evidently, the maximum growth conditions for these materials should not exceed 750 °C. Single crystal x-ray data show that Ce2TIn8 compounds crystallize in the tetragonal Ho2CoGa8 phase (space group P4/mmm) with lattice parameters a=4.6898(3) Ã
and c=12.1490(8)Â Ã
for Pt-based one (Pd: a=4.6881(4)Â Ã
and c=12.2031(8)Â Ã
). Ce3TIn11 compounds adopt Ce3PdIn11 structure with a=4.6874(4)Â Ã
and c=16.8422(12)Â Ã
for Pt-based one (Pd: a=4.6896Â Ã
and c=16.891Â Ã
). Specific heat experiments on Ce3PtIn11 and Ce3PdIn11 have revealed that both compounds undergo two successive magnetic transitions at T1 ~2.2 K followed by TN ~2.0 K and T1 ~1.7 K and TN ~1.5 K, respectively. In addition, both compounds exhibit enhanced Sommerfeld coefficients yielding γPt=0.300 J/mol K2 Ce (γPd=0.29 J/mol K2 Ce), hence qualifying them as heavy fermion materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 397, 1 July 2014, Pages 47-52
Journal: Journal of Crystal Growth - Volume 397, 1 July 2014, Pages 47-52
نویسندگان
M. Kratochvilova, M. Dusek, K. Uhlirova, A. Rudajevova, J. Prokleska, B. Vondrackova, J. Custers, V. Sechovsky,