کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10714428 | 1025588 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Larmor diffraction measurement of the temperature dependence of lattice constants in CuGeO3
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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
By using the neutron Larmor diffraction method and a setup based on the improved neutron resonant spin echo option ZETA recently installed on the three-axis spectrometer IN22 (CRG beam line at the ILL), we have determined the precise relative evolution of the inter- and intra-chain lattice constants of the paradigmatic spin-Peierls compound CuGeO3 as a function of temperature. Our results are consistent with previous results obtained by conventional high-resolution diffraction. This method also allows to retrieve independently the sample mosaicities, as well as the widths of various lattice-spacings distributions, thus offering an evaluation of the intrinsic sample quality. In spite of the good definition of the spin-Peierls transition at TSP=14.1(1)Â K in our sample, we observe a large distribution of lattice constants (Îd/dâ3Ã10â3), while the mosaicity of the sample appears to be quite reasonable (â²20â²).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 406, Issue 12, June 2011, Pages 2333-2336
Journal: Physica B: Condensed Matter - Volume 406, Issue 12, June 2011, Pages 2333-2336
نویسندگان
N. Martin, L.-P. Regnault, S. Klimko, J.E. Lorenzo, R. Gähler,