کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1813502 | 1525245 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Static magnetic order and anisotropy of the layered cobalt dioxides Bi1.6Pb0.4Sr2Co2Oy and Bi2Sr2Co2Oy
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The magnetism of a Pb-doped Bi2Sr2Co2Oy (BSCO) crystal has been investigated by positive muon-spin rotation and relaxation (μ+SR) spectroscopy. Weak transverse field (wTF)-μ+SR measurements show that the whole sample enters into a magnetic state below â¼4.5K. Combining the results of zero-field (ZF)-μ+SR experiment with susceptibility measurements, it is clarified that the sample is in a ferromagnetic ordered phase with a Curie temperature (TC) of 4.7 K and with the ordered internal magnetic field parallel to the c-axis within â¼Â±15â. On the other hand, a pure BSCO crystal is also found to exhibit a bulk magnetic transition at 1.0 K by μ+SR. Since the relationship between the reduced T and reduced internal magnetic field for BSCO is almost equivalent to that for Pb-doped BSCO, the origin of the magnetic transition for both crystals is thought to be explained by common physics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 404, Issues 5â7, 15 April 2009, Pages 773-776
Journal: Physica B: Condensed Matter - Volume 404, Issues 5â7, 15 April 2009, Pages 773-776
نویسندگان
Jun Sugiyama, Yutaka Ikedo, Hiroshi Nozaki, Peter L. Russo, Jess H. Brewer, Eduardo J. Ansaldo, Gerald D. Morris, Kim H. Chow, Daniel Andreica, Alex Amato, Takenori Fujii, Satoshi Okada, Ichiro Terasaki,