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Title: Magnetic properties, phase evolution, and microstructure of melt-spun (Sm{sub 1-x}Pr{sub x})Co{sub 7-y}Hf{sub y}C{sub z} (x=0-1; y=0.1-0.3; z=0-0.14) ribbons

Abstract

Magnetic properties, phase evolution, and microstructure of melt-spun (Sm{sub 1-x}Pr{sub x})Co{sub 7-y}Hf{sub y}C{sub z} ribbons have been investigated. For (Sm{sub 1-x}Pr{sub x})Co{sub 7-y}Hf{sub y} (x=0-1; y=0.1-0.3) ribbons, the magnetization increases, but coercivity decreases, with increasing Pr content. However, the phase constitution and microstructure have not been influenced by modifying Pr content x. The attractive magnetic properties of B{sub r}=6.5 kG, {sub i}H{sub c}=6.1 kOe, and (BH){sub max}=7.2 MG Oe could be obtained for (Sm{sub 0.8}Pr{sub 0.2})Co{sub 6.9}Hf{sub 0.1} ribbons. A slight addition of C in (Sm{sub 0.8}Pr{sub 0.2})Co{sub 6.9}Hf{sub 0.1}C{sub z} (z=0.06-0.14) ribbon not only refines the microstructure, but also induces nanoscale fcc-Co precipitation in the matrix, leading to the stronger exchange-coupling effect between magnetic grains and the enhancement of remanence and magnetic energy product. As a result, the improved magnetic properties of B{sub r}=7.1 kOe, {sub i}H{sub c}=8.5 kOe, and (BH){sub max}=11.2 MG Oe can be achieved for (Sm{sub 0.8}Pr{sub 0.2})Co{sub 6.9}Hf{sub 0.1}C{sub 0.12} ribbons.

Authors:
; ; ; ; ; ; ;  [1]
  1. Department of Physics, National Chung Cheng University, Taiwan Institute of Physics, Academia Sinica, Taipei, Taiwan (China)
Publication Date:
OSTI Identifier:
21137318
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 103; Journal Issue: 7; Conference: 52. annual conference on magnetism and magnetic materials, Tampa, FL (United States), 5-9 Nov 2007; Other Information: DOI: 10.1063/1.2829399; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COBALT ALLOYS; COERCIVE FORCE; COPRECIPITATION; EXCHANGE INTERACTIONS; FCC LATTICES; GRAIN REFINEMENT; HAFNIUM ALLOYS; MAGNETIC MATERIALS; MAGNETIC PROPERTIES; MAGNETIZATION; MICROSTRUCTURE; NANOSTRUCTURES; PRASEODYMIUM ALLOYS; SAMARIUM ALLOYS

Citation Formats

Chang, H W, Chen, I W, Chang, C W, Fang, Y K, Hsieh, C C, Chang, W C, Sun, A C, Yao, Y D, Department of Physics, National Chung Cheng University, Taiwan, Department of Physics, National Taiwan University, Taipei, Taiwan, and Department of Materials Engineering, Tatung University, Taipei, Taiwan. Magnetic properties, phase evolution, and microstructure of melt-spun (Sm{sub 1-x}Pr{sub x})Co{sub 7-y}Hf{sub y}C{sub z} (x=0-1; y=0.1-0.3; z=0-0.14) ribbons. United States: N. p., 2008. Web. doi:10.1063/1.2829399.
Chang, H W, Chen, I W, Chang, C W, Fang, Y K, Hsieh, C C, Chang, W C, Sun, A C, Yao, Y D, Department of Physics, National Chung Cheng University, Taiwan, Department of Physics, National Taiwan University, Taipei, Taiwan, & Department of Materials Engineering, Tatung University, Taipei, Taiwan. Magnetic properties, phase evolution, and microstructure of melt-spun (Sm{sub 1-x}Pr{sub x})Co{sub 7-y}Hf{sub y}C{sub z} (x=0-1; y=0.1-0.3; z=0-0.14) ribbons. United States. https://doi.org/10.1063/1.2829399
Chang, H W, Chen, I W, Chang, C W, Fang, Y K, Hsieh, C C, Chang, W C, Sun, A C, Yao, Y D, Department of Physics, National Chung Cheng University, Taiwan, Department of Physics, National Taiwan University, Taipei, Taiwan, and Department of Materials Engineering, Tatung University, Taipei, Taiwan. 2008. "Magnetic properties, phase evolution, and microstructure of melt-spun (Sm{sub 1-x}Pr{sub x})Co{sub 7-y}Hf{sub y}C{sub z} (x=0-1; y=0.1-0.3; z=0-0.14) ribbons". United States. https://doi.org/10.1063/1.2829399.
@article{osti_21137318,
title = {Magnetic properties, phase evolution, and microstructure of melt-spun (Sm{sub 1-x}Pr{sub x})Co{sub 7-y}Hf{sub y}C{sub z} (x=0-1; y=0.1-0.3; z=0-0.14) ribbons},
author = {Chang, H W and Chen, I W and Chang, C W and Fang, Y K and Hsieh, C C and Chang, W C and Sun, A C and Yao, Y D and Department of Physics, National Chung Cheng University, Taiwan and Department of Physics, National Taiwan University, Taipei, Taiwan and Department of Materials Engineering, Tatung University, Taipei, Taiwan},
abstractNote = {Magnetic properties, phase evolution, and microstructure of melt-spun (Sm{sub 1-x}Pr{sub x})Co{sub 7-y}Hf{sub y}C{sub z} ribbons have been investigated. For (Sm{sub 1-x}Pr{sub x})Co{sub 7-y}Hf{sub y} (x=0-1; y=0.1-0.3) ribbons, the magnetization increases, but coercivity decreases, with increasing Pr content. However, the phase constitution and microstructure have not been influenced by modifying Pr content x. The attractive magnetic properties of B{sub r}=6.5 kG, {sub i}H{sub c}=6.1 kOe, and (BH){sub max}=7.2 MG Oe could be obtained for (Sm{sub 0.8}Pr{sub 0.2})Co{sub 6.9}Hf{sub 0.1} ribbons. A slight addition of C in (Sm{sub 0.8}Pr{sub 0.2})Co{sub 6.9}Hf{sub 0.1}C{sub z} (z=0.06-0.14) ribbon not only refines the microstructure, but also induces nanoscale fcc-Co precipitation in the matrix, leading to the stronger exchange-coupling effect between magnetic grains and the enhancement of remanence and magnetic energy product. As a result, the improved magnetic properties of B{sub r}=7.1 kOe, {sub i}H{sub c}=8.5 kOe, and (BH){sub max}=11.2 MG Oe can be achieved for (Sm{sub 0.8}Pr{sub 0.2})Co{sub 6.9}Hf{sub 0.1}C{sub 0.12} ribbons.},
doi = {10.1063/1.2829399},
url = {https://www.osti.gov/biblio/21137318}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 7,
volume = 103,
place = {United States},
year = {2008},
month = {4}
}