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
N1 - Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (MSIP) (2018006784). Experiments at PLS-II were supported in part by MSICT and POSTECH.
Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning ( MSIP ) ( 2018006784 ). Experiments at PLS-II were supported in part by MSICT and POSTECH .
PY - 2019/5
Y1 - 2019/5
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
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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 -