کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7901241 | 1510434 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Composition dependence of the crystalline-to-amorphous phase transformation of vanadate compounds in the CdO-V2O5 binary system
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Composition dependence of the crystalline-to-amorphous phase transformation of vanadate compounds in the CdO-V2O5 binary system Composition dependence of the crystalline-to-amorphous phase transformation of vanadate compounds in the CdO-V2O5 binary system](/preview/png/7901241.png)
چکیده انگلیسی
By mixing different molar concentrations of V2O5 and CdO as reactants, and using the melt-quenching method, an evolution from crystalline vanadate compounds to amorphous materials was produced. For chemical compositions with high mol% of V2O5, crystalline phases with the sequence V2O5, CdV2O6, and Cd2V2O7 were synthesized. On the other hand, high mol% of CdO led to the formation of amorphous materials. The identification of the crystalline and amorphous phases was carried out by X-ray diffraction and Raman scattering experiments. From optical absorption data, the optical band gap was determined with values between 1.97 and 2.83Â eV. Dark conductivity measurements from room temperature to 450Â K were made for the whole set of samples. In all cases thermally activated transport was observed. By scanning electron microscopy, depending on the mol% of the reactants, different morphological structures for each crystalline and amorphous material were recorded.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 408, 15 January 2015, Pages 26-31
Journal: Journal of Non-Crystalline Solids - Volume 408, 15 January 2015, Pages 26-31
نویسندگان
L. Aquino-Meneses, R. Lozada-Morales, G. Lopez-Calzada, S. Jiménez-Sandoval, Ma.E. Zayas, O. Zelaya-Angel, M. Becerril, J. Carmona-Rodriguez, E. Sanchez-Mora, L.E. Serrano,