کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1529648 | 995764 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic and electronic properties of Sn1-xCrxO2 diluted alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We present the results of first-principles electronic structure calculations of Sn0.96Cr0.04O2 alloys, simulating chromium in rutile tin dioxide as an impurity in a diluted magnetic semiconductor configuration. A magnetic bistability has been observed, with the occurrence of a low-spin state with magnetic moment m = 0μB in addition to the high-spin ground state with m = 2μB. When an oxygen vacancy is included, as one of the nearest-neighbors to Cr impurity, a remarkable change is observed in the magnetic metastability. The energy barrier for the crossover from the low-spin to high-spin is lowered by 75%. These findings suggest that these materials may be used in applications which require different magnetized states.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 176, Issue 17, 25 October 2011, Pages 1378-1381
Journal: Materials Science and Engineering: B - Volume 176, Issue 17, 25 October 2011, Pages 1378-1381
نویسندگان
Pablo D. Borges, Lui'sa M.R. Scolfaro, Horácio W. Leite Alves, Eronides F. Jr., Lucy V.C. Assali,