کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5491668 | 1525124 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic properties of co-precipitated hexaferrite powders with Sm-Co substitutions optimized with the molten flux method
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Magnetic properties of co-precipitated hexaferrite powders with Sm-Co substitutions optimized with the molten flux method Magnetic properties of co-precipitated hexaferrite powders with Sm-Co substitutions optimized with the molten flux method](/preview/png/5491668.png)
چکیده انگلیسی
In this work, using the chemical coprecipitation method, Sr1âxSmxFe12âxCoxO19 (x = 0, 0.1, 0.2) hexaferrite powders were prepared. Major magnetization loops were recorded at room temperature in order to determine the correct calcination temperature for optimum hard magnetic properties. It is found that a small degree of substitution increases substantially the coercive field. Also, the use of the molten flux calcination method increases the remanent magnetization. SEM/EDXS and XRD measurements were performed at the calcined powders: the results show that a single hexaferrite phase is formed and that the substituted powders consist of an assembly of grains with a mean diameter of 40Â nm. Measurements of minor magnetization loops and of the temperature and time dependence of the magnetization confirm that the powders consist of a non-oriented single domain magnetic particles assembly. The results indicate that Sm could be a viable replacement for La in the manufacturing of hexaferrites with a high-energy product.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 525, 15 November 2017, Pages 78-83
Journal: Physica B: Condensed Matter - Volume 525, 15 November 2017, Pages 78-83
نویسندگان
C. Serletis, G. Litsardakis, E. Pavlidou, K.G. Efthimiadis,