Title :
A study on magnetic property loss of Nd-Fe-B permanent magnet by γ-ray irradiation
Author :
Lee, Song ; Kang, Young Soo
Author_Institution :
Pukyong Nat. Univ., Pusan
Abstract :
The effects of the gamma-ray irradiation on the magnetic properties of Nd-Fe-B permanent magnetic had been investigated. The magnetic flux loss of Nd-Fe-B magnet before and after irradiation was measured. Due to the accumulated high energy, gamma-ray irradiation was used for the magnetic property loss of Nd-Fe-B magnet. The experimental results showed that the gamma-ray irradiation affected the magnetic properties of permanent magnet by radiation dose at 0 kGy, 100 kGy, 500 kGy, and 700 kGy. Nd-Fe-B magnet has the decreased Ms and Hc by gamma-ray irradiation. And the characterizations were done by XRD, FE-SEM images, and SQUID, etc.
Keywords :
magnetic flux; permanent magnets; radiation effects; FE-SEM images; NdFeB; NdFeB - System; SQUID; XRD; gamma-ray irradiation; magnetic flux loss; magnetic property loss; permanent magnet; Lifetime estimation; Loss measurement; Magnetic field measurement; Magnetic flux; Magnetic losses; Magnetic properties; Permanent magnets; Protons; Pulse measurements; Synchrotron radiation; γ-ray; Magnetic properties; Ms; Nd-Fe-B;
Conference_Titel :
Nanotechnology Materials and Devices Conference, 2006. NMDC 2006. IEEE
Conference_Location :
Gyeongju
Print_ISBN :
978-1-4244-0541-1
Electronic_ISBN :
978-1-4244-0541-1
DOI :
10.1109/NMDC.2006.4388955
