Crystal structure and magnetic properties of melt spun Sm (Co,V) 7 ribbons

Tunghai University Institutional Repository > 理學院 > 應用物理學系所 > 期刊論文 > Item 310901/22155

Please use this identifier to cite or link to this item: http://140.128.103.80:8080/handle/310901/22155

Title:	Crystal structure and magnetic properties of melt spun Sm (Co,V) 7 ribbons
Authors:	Hsieh, C.C., Chang, H.W., Chang, C.W., Guo, Z.H., Yang, C.C., Chang, W.C.
Contributors:	Department of Physics, Tunghai University
Keywords:	Doping elements;Grain sizes;Intrinsic coercivity;Melt-spun;Optimal magnetic properties;Structure refinements;TbCu7-type structures;Transmission electron microscopy images;Wheel-speed
Date:	2009
Issue Date:	2013-05-15T09:11:17Z (UTC)
Abstract:	The crystal structure and magnetic properties of melt spun Sm (Co,V) 7 ribbons have been investigated. It was found that SmCo7-x Vx ribbons may crystallize in pure TbCu7 -type structure for x=0.1-0.3 spun at a high wheel speed of 40 m/s. The structure refinement results show that the doping element V prefers to occupy the 2e site of TbCu7 -type structure. Besides, transmission electron microscopy images show that with increasing V content, the grain size was refined from 200-400 nm for x=0.1 to 40-100 nm for x=0.3. As a result, the intrinsic coercivity enhances effectively from 1.9 kOe for SmCo7 ribbon to 11.5 kOe for SmCo6.7 V0.3 ribbon. It is also verified that a slight addition of C to SmCo7-x Vx could further refine the microstructure, resulting in the improvement of the magnetic properties of SmCo7-x Vx ribbons. The optimal magnetic properties of r =58.7 emu/g, Hi c =13.5 kOe, and (BH) max =9.3 MG Oe can be obtained for SmCo6.9 V0.1 C0.1 ribbon. ? 2009 American Institute of Physics.
Relation:	Journal of Applied Physics 105 (7) , art. no. 07A705
Appears in Collections:	[應用物理學系所] 期刊論文

Files in This Item:

File	Size	Format
index.html	0Kb	HTML	270	View/Open

Loading...