کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1486019 | 1510550 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Low temperature specific heat of doped and undoped glasses
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this work we have measured the specific heat, cp, of several glasses between 2 and 160 K. The experiments were performed in low silica calcium aluminosilicate (prepared under vacuum and room atmosphere conditions), in silicate and in fluoride glasses. The influence of neodymium, iron and cobalt in cp values at low temperature was also investigated. The scaling proposed by Liu and Löhneysen was used to analyze the experimental data. The temperatures in which the maxima in cp/T3, the so called boson peak, occur are discussed in terms of the Hrubý coefficient, which provides information about the glass forming ability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 352, Issues 32â35, 15 September 2006, Pages 3572-3576
Journal: Journal of Non-Crystalline Solids - Volume 352, Issues 32â35, 15 September 2006, Pages 3572-3576
نویسندگان
N.G.C. Astrath, A. Steimacher, A.N. Medina, J.H. Rohling, J.R.D. Pereira, A.C. Bento, M.L. Baesso, L.M. da Silva, F.G. Gandra,