کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1814789 | 1525251 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Theoretical study of the density of states and magnetic properties of electron-doped Sr1âxCexCoO3 compounds
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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
Within the unrestricted Hartree-Fock approximation and the real space recursion method, we calculated the electronic structure of the Sr1âxCexCoO3 in the whole doping range 0.0⩽x⩽1.0. Various spin states in an enlarged double cell are investigated and five of them are the ground states at different doping concentration. The magnetic ground state of the doped system takes an intermediate-spin state for x<0.02, a low-spin-intermediate-spin ferromagnetically ordered state for 0.02⩽x<0.38, and a low-spin-high-spin ferromagnetically ordered state for 0.38⩽x<0.79. For 0.79⩽x<0.9, the ground state of the system is the intermediate-spin chain-type antiferromagnetically ordered state, which is followed by the intermediate-spin nearest neighbor antiferromagnetically ordered state up to x=1.0. The densities of states of all magnetic ground states are computed and their electronic and magnetic properties are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 403, Issues 10â11, 1 May 2008, Pages 1927-1932
Journal: Physica B: Condensed Matter - Volume 403, Issues 10â11, 1 May 2008, Pages 1927-1932
نویسندگان
Sun Aimin, Zhang Xiu'e, Kang Yonggang, Yang Guofeng, Wang Shunqing, Zhang Tao, Huang Guohai, Zhu Haibin,