کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1594399 1515649 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Defect-mediated room temperature ferromagnetism in zinc oxide
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Defect-mediated room temperature ferromagnetism in zinc oxide
چکیده انگلیسی

We have introduced systematic changes in the electrical, magnetic and optical properties of undoped ZnO films through irradiation with an UV Excimer laser. Increases in the electrical conductivity and magnetic moment have been controlled precisely with the number of laser pulses, without altering the Wurtzite crystal structure and nn-type semiconducting characteristics of the films. The laser induced ferromagnetism and concomitant conductivity enhancement can be reversed through subsequent thermal annealing. Hence, we have successfully demonstrated reversible switching of RTFM in undoped ZnO by employing oxygen annealing (off) and laser irradiation (on). We discuss these findings in terms of defects and defect complexes created by pulsed laser irradiation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 150, Issues 35–36, September 2010, Pages 1660–1664
نویسندگان
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