Affiliation:
1. Korea Aerospace University, Gyeonggi-do 412-791, Korea
2. Department of Materials Engineering, Korea Aerospace University, Gyeonggi-do 412-791, Korea
Abstract
Sm -16.7 wt % Co alloy powders were prepared by a high energy ball milling under various milling times, and their micro-structure and magnetic properties were investigated. After 5 h milling, the irregular shaped powders were changed to spherical shape and the size decreased to approximately 5 µm. Based on TEM results, the obtained powders consisted of nano-sized particles with approximately 13 nm, which showed a slight decrease with increasing the milling time. The XRD peaks of powders including the SmCo 5 phase disappeared after milling and became broader with increasing the milling time, and the peaks increased again after 30 h milling. The reduction in coercivity and remanence values appeared with increasing the milling time, whereas the saturated magnetization increased.
Publisher
World Scientific Pub Co Pte Lt
Subject
Condensed Matter Physics,Statistical and Nonlinear Physics
Cited by
2 articles.
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