Abstract
The rare-earth-free hard magnetic L1 0 -FeNi phase found in cosmic meteorites demonstrates potential as a next-generation permanent magnet. However, it is very difficult to artificially produce the L1 0 -FeNi phase due to the low atomic diffusion coefficients of Fe and Ni near the order-disorder transition temperature (∼320 °C). Therefore, FeNiPC amorphous alloy systems exhibiting crystallization temperature (T x ) near the transition temperature were investigated. The amorphous alloys were annealed at T x , resulting in high atomic diffusion. The structural and microstructural characterizations of annealed ribbons revealed the formation of L1 0 -FeNi phase through observation of the superlattice peak. The magnetic property, such as coercivity (H c ), also indicated the formation of L1 0 -FeNi phase, because the maximum H c value is 641 Oe after the annealing process.
| Original language | English |
|---|---|
| Pages (from-to) | 599-605 |
| Number of pages | 7 |
| Journal | Current Applied Physics |
| Volume | 19 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2019 May 1 |
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Keywords
- Amorphous alloy
- Crystallization temperature
- Hard magnet
- L1 -FeNi phase
- Order-disorder temperature
- Superlattice
ASJC Scopus subject areas
- Materials Science(all)
- Physics and Astronomy(all)
Cite this
Properties of a rare earth free L1 0 -FeNi hard magnet developed through annealing of FeNiPC amorphous ribbons . / Kim, Jihye; Kim, Sumin; Suh, Jin Yoo; Kim, Yong Jin; Kim, Young Keun; Choi-Yim, Haein.
In: Current Applied Physics, Vol. 19, No. 5, 01.05.2019, p. 599-605.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Properties of a rare earth free L1 0 -FeNi hard magnet developed through annealing of FeNiPC amorphous ribbons
AU - Kim, Jihye
AU - Kim, Sumin
AU - Suh, Jin Yoo
AU - Kim, Yong Jin
AU - Kim, Young Keun
AU - Choi-Yim, Haein
PY - 2019/5/1
Y1 - 2019/5/1
N2 - The rare-earth-free hard magnetic L1 0 -FeNi phase found in cosmic meteorites demonstrates potential as a next-generation permanent magnet. However, it is very difficult to artificially produce the L1 0 -FeNi phase due to the low atomic diffusion coefficients of Fe and Ni near the order-disorder transition temperature (∼320 °C). Therefore, FeNiPC amorphous alloy systems exhibiting crystallization temperature (T x ) near the transition temperature were investigated. The amorphous alloys were annealed at T x , resulting in high atomic diffusion. The structural and microstructural characterizations of annealed ribbons revealed the formation of L1 0 -FeNi phase through observation of the superlattice peak. The magnetic property, such as coercivity (H c ), also indicated the formation of L1 0 -FeNi phase, because the maximum H c value is 641 Oe after the annealing process.
AB - The rare-earth-free hard magnetic L1 0 -FeNi phase found in cosmic meteorites demonstrates potential as a next-generation permanent magnet. However, it is very difficult to artificially produce the L1 0 -FeNi phase due to the low atomic diffusion coefficients of Fe and Ni near the order-disorder transition temperature (∼320 °C). Therefore, FeNiPC amorphous alloy systems exhibiting crystallization temperature (T x ) near the transition temperature were investigated. The amorphous alloys were annealed at T x , resulting in high atomic diffusion. The structural and microstructural characterizations of annealed ribbons revealed the formation of L1 0 -FeNi phase through observation of the superlattice peak. The magnetic property, such as coercivity (H c ), also indicated the formation of L1 0 -FeNi phase, because the maximum H c value is 641 Oe after the annealing process.
KW - Amorphous alloy
KW - Crystallization temperature
KW - Hard magnet
KW - L1 -FeNi phase
KW - Order-disorder temperature
KW - Superlattice
UR - http://www.scopus.com/inward/record.url?scp=85062395523&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85062395523&partnerID=8YFLogxK
U2 - 10.1016/j.cap.2019.03.001
DO - 10.1016/j.cap.2019.03.001
M3 - Article
AN - SCOPUS:85062395523
VL - 19
SP - 599
EP - 605
JO - Current Applied Physics
JF - Current Applied Physics
SN - 1567-1739
IS - 5
ER -