کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1491713 | 992358 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of gallium oxynitride in the presence of iron through a citrate route
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Preparation of gallium oxynitride in the presence of iron through a citrate route Preparation of gallium oxynitride in the presence of iron through a citrate route](/preview/png/1491713.png)
چکیده انگلیسی
Gallium oxynitrides were prepared in the copresence of various amounts of Fe3+ by ammonia nitridation of oxide precursors. Their crystallinity reduced in a compositional range up to 3Â mol% and improved again above 4Â mol% with an appearance of a nitride impurity. The product with 2Â mol% of Fe3+ showed the maximum oxygen content of 21Â mol% and minimum nitrogen content of 24Â mol%. X-ray absorption spectroscopy, Mössbauer and magnetic measurements suggested a small amount of Fe3O4-like clusters in the oxynitride products. Density-functional calculations supported that the Fe-O-clustered system is more preferable than the statistical distribution of iron in the hexagonal gallium oxynitride structure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 44, Issue 8, 5 August 2009, Pages 1656-1659
Journal: Materials Research Bulletin - Volume 44, Issue 8, 5 August 2009, Pages 1656-1659
نویسندگان
Shinichi Yamamoto, Shinichi Kikkawa, Yuji Masubuchi, Takashi Takeda, Maki Okube, Akira Yoshiasa, Marck Lumey, Richard Dronskowski,