کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1461136 989616 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Scandium ion doped yttrium oxide transparent ceramic from nitrate alanine microwave combustion synthesized nanopowders
ترجمه فارسی عنوان
سرامیک شفاف اتریش یون های دوگانه اسکاندیم از نیترات آلانین نانو پودرهای سنتز شده از مایکروویو
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی

One atomic percent Neodymium ion doped Yttrium oxide, with 25 at% scandium ion (Nd0.02Sc0.5Y1.48O3), was synthesized by nitrate alanine microwave gel combustion followed by calcinations at 1000 °C for 2 h. Phase purity of nanopowder was characterized by X-Ray Diffraction (XRD). Neodymium and scandium ion doping was confirmed by cell parameter calculation and Scanning Electron Microscope-Electron Dispersive X-ray (SEM-EDX) analysis. Particles with size range 25–35 nm with close to spherical shape were obtained as observed by Transmission Electron Microscopy (TEM). Powder on compaction followed by vacuum sintering at 1765 °C for 40 min led to the formation of ceramic with 76% transmission at 2500 nm compared to translucent ceramic obtained without scandium ion doping. This indicates formation of highly sinterable neodymium doped yttrium oxide nanopowders by nitrate alanine microwave gel combustion route with scandium ion additive. Further the absorption and emission bands of Nd0.02Sc0.5Y1.48O3 are inhomogeneously broadened and fluorescence lifetime is longer than Nd0.02Y1.98O3.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 40, Issue 5, June 2014, Pages 6787–6791
نویسندگان
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