کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1593009 1002682 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Valence state analysis of Mn and Fe ions in room-temperature ferromagnetic Mn- and Fe-codoped In2O3
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Valence state analysis of Mn and Fe ions in room-temperature ferromagnetic Mn- and Fe-codoped In2O3
چکیده انگلیسی

The detailed valence states of Mn and Fe ions in room-temperature ferromagnetic In2O3 doped with Mn and Fe ions were investigated by the near-edge X-ray absorption fine structure (NEXAFS) measurements. It was confirmed that Mn2+ and Mn3+ coexist in In2O3. In addition to these two magnetic ions, Sn4+ was incorporated to control the charge states of doped Mn and/or Fe ions, which makes the Mn2+/Mn3+ ratio larger with an increase in the doped- Sn4+ concentration. It was found that the magnetic susceptibility decreased with an increase in Mn2+ because of the Sn4+-doping, which indicated that the coexistence of Mn2+ and Mn3+ is mandatory for room-temperature ferromagnetism in Mn- and Fe-codoped In2O3.


► Detailed electronic states of Mn and Fe codoped In2O3 are investigated here.
► Near-edge X-ray absorption fine structure (NEXAFS) measurements were carried out.
► Coexistence of Mn2+ and Mn3+ is mandatory for room-temperature ferromagnetism.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 151, Issue 23, December 2011, Pages 1749–1752
نویسندگان
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