کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1819248 1026054 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Observation of nanostripes and -clusters in (Nd, EuGd)Ba2Cu3Ox superconductors
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Observation of nanostripes and -clusters in (Nd, EuGd)Ba2Cu3Ox superconductors
چکیده انگلیسی

Nanostripes are observed in melt-textured and single-crystalline samples of the ternary light rare earth (LRE)-compound (Nd0.33Eu0.33Gd0.33)Ba2Cu3Ox (NEG) by means of atomic force microscopy, scanning tunnelling microscopy at ambient conditions, combined with transmission electron microscopy and electron backscatter diffraction. This enables the observation of several important features: The nanostripes are formed by chains of nanoclusters, representing the LRE/Ba substitution. The dimensions of the nanostripes are similar for both types of NEG samples. The periodicity of the nanostripes is found to range between 40 and 60 nm; the shape of the nanoclusters is elliptic with a major axis length between 300 and 500 nm and a minor axis length of about 30–150 nm. The stripes are filling effectively the space in between the twin boundaries. Concerning the flux pinning, the nanoclusters are the important pinning sites, not the nanostripes themselves.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 469, Issue 4, 15 February 2009, Pages 168–176
نویسندگان
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