کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5492220 | 1525146 | 2016 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Heat flux measurements of Tb3M series (M=Co, Rh and Ru): Specific heat and magnetocaloric properties
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Heat flux measurements of Tb3M series (M=Co, Rh and Ru): Specific heat and magnetocaloric properties Heat flux measurements of Tb3M series (M=Co, Rh and Ru): Specific heat and magnetocaloric properties](/preview/png/5492220.png)
چکیده انگلیسی
We report on the magnetic properties and magnetocaloric effect (MCE) for the Tb3M series, with M=Co, Rh and Ru, obtained using a heat flux technique. The specific heat of Tb3Co and Tb3Rh are very similar, with a first order type transition occurring around 6 K below the magnetic ordering temperature without any corresponding feature on the magnetization. The slightly enhanced electronic specific heat, the Debye temperature around 150 K and the presence of the magnetic specific heat well above the ordering temperature are also characteristic of many other compounds of the R3M family (R=Rare Earth). The specific heat for Tb3Ru, however, presents two peaks at 37 K and 74 K. The magnetization shows that below the first peak the system presents an antiferromagnetic behavior and is paramagnetic above 74 K. We obtained a magnetocaloric effect for M=Co and Rh, ââS=12 J/kg K, but for Tb3Ru it is less than 3 J/kg K (μ0âH=5 T). We believe that the experimental results show that the MCE is directly related with the process of hybridization of the (R)5d-(M)d electrons that occurs in the R3M materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 503, 15 December 2016, Pages 64-69
Journal: Physica B: Condensed Matter - Volume 503, 15 December 2016, Pages 64-69
نویسندگان
J.C.B. Monteiro, G.A. Lombardi, R.D. dos Reis, H.E. Freitas, L.P. Cardoso, A.M. Mansanares, F.G. Gandra,