کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10714114 | 1025569 | 2012 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic and luminescent properties of manganese-doped ZnSe crystals
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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
Magnetic and photoluminescent properties of manganese-doped ZnSe crystals with different impurity concentrations were investigated. The concentration of Mn2+ ions in ZnSe crystals has been varied from 0.01 to 0.3Â at%. Magnetic and photoluminescent studies have confirmed the introduction of Mn in ZnSe crystals. It was established that Mn2+ ions are responsible for the emission bands with maximum at 616Â nm and 633Â nm, which correspond to 4T2â6A1 and 4T1â6A1 intracentre transitions of Mn2+ ions respectively. It was found that the concentration quenching of the photoluminescent bands is associated with Mn2+ ions, which are due to the formation of Mn-Mn clusters. Magnetic properties studies have shown that at high doping levels the manganese atoms form Mn-Mn clusters in ZnSe. From the temperature dependence of magnetic susceptibility of ZnSe:Mn crystals that follows the Curie-Weiss law, it was possible to estimate the Curie-Weiss temperature Î(x) and the effective Mn-Mn antiferromagnetic exchange constant (J1).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 407, Issue 18, 15 September 2012, Pages 3802-3807
Journal: Physica B: Condensed Matter - Volume 407, Issue 18, 15 September 2012, Pages 3802-3807
نویسندگان
Vadim P. Sirkeli, Dmitrii D. Nedeoglo, Natalia D. Nedeoglo, Ivan V. Radevici, Raisa L. Sobolevskaia, Konstantin D. Sushkevich, Erkki Lähderanta, Alexander V. Lashkul, Reino Laiho, Jens-Peter Biethan, Oktay Yilmazoglu, Dimitris Pavlidis,