کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1596803 | 1002853 | 2006 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of carbon concentration on structural, magnetic and electrical transport properties for antiperovskite compounds AlCxMn3
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Influence of carbon concentration on structural, magnetic and electrical transport properties for antiperovskite compounds AlCxMn3 Influence of carbon concentration on structural, magnetic and electrical transport properties for antiperovskite compounds AlCxMn3](/preview/png/1596803.png)
چکیده انگلیسی
The structural, magnetic and transport properties of the antiperovskite AlCxMn3 (1.0â¤xâ¤1.4) are investigated. It is found that the lattice parameter a increases monotonously with nominal carbon concentration x. The Curie temperature TC increases with increasing x from 1.0 to 1.1 and then decreases with further increasing x. The highest TC value is 364 K, about 70 K higher than that of stoichiometric AlCMn3 reported previously. This may be attributed to a competition between the lattice expansion and the strong Mn 3d-C 2p hybridization. Below 100 K, the resistivity can be well described as Ï(T)=Ï0+AT2, corresponding to the electron-electron scattering. A increases with x, suggesting certain changes in the electronic structure, e.g. carrier density. Above 250 K, all Ï(T) curves depart from the linear dependence on temperature and seem to take on a tendency towards saturation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 138, Issue 2, April 2006, Pages 64-67
Journal: Solid State Communications - Volume 138, Issue 2, April 2006, Pages 64-67
نویسندگان
P. Tong, Y.P. Sun, B.C. Zhao, X.B. Zhu, W.H. Song,