Advanced Magnetic Actuation: Harnessing the Dynamics of Sm<sub>2</sub>Fe<sub>17-<i>x</i> </sub>Cu<sub> <i>x</i> </sub>N<sub>3</sub> Composites
- Authors
- Koo, Kangmo; Kwon, Young-Tae; Park, Ji Young; Choa, Yong-Ho
- Issue Date
- Feb-2024
- Publisher
- American Chemical Society
- Keywords
- hard-magnetic soft actuator; Sm2Fe17-x Cu x N3; reduction-diffusion temperature; coercivity; softrobotics; soft magnetic composite; Sm-Fe-N
- Citation
- ACS Applied Materials & Interfaces, v.16, no.9, pp 11872 - 11879
- Pages
- 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS Applied Materials & Interfaces
- Volume
- 16
- Number
- 9
- Start Page
- 11872
- End Page
- 11879
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/118407
- DOI
- 10.1021/acsami.3c17135
- ISSN
- 1944-8244
1944-8252
- Abstract
- Recently, there has been an escalating demand for advanced materials with superior magnetic properties, especially in the actuator domain. High coercivity (H-ci), an essential magnetic property, is pivotal for programmable shape changes in magnetic actuators and profoundly affects their performance. In this study, a new Sm2Fe17-xCuxN3 magnet with a high H-ci was achieved by modifying the temperature of the reduction-diffusion process & horbar;lowering it from 900 to 700 degrees C through the introduction of Cu and finer control over the structure and morphology of the Sm2Fe17-xCuxN3 magnetic component within the actuator composite. Consequently, the Sm2Fe17-xCuxN3 magnet demonstrated a remarkable H-ci of 11.5 kOe, eclipsing the value of 6.9 kOe attained by unalloyed Sm2Fe17N3 at reduced temperatures. By capitalizing on the enhanced magnetic properties of the Sm2Fe17-xCuxN3 composite and incorporating poly(ethylene glycol) into the elastomer matrix, we successfully fabricated a robust actuator. This innovative approach harnesses the strengths of hard magnets as actuators, offering stability under high-temperature conditions, precision control, longevity, wireless functionality, and energy efficiency, highlighting the vast potential of hard magnets for a range of applications.
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