Title :
The observations of coercivity in RE-Fe-B samples under pulsed high magnetic fields up to 33T
Author :
Shimoji, H. ; Borkowski, E.B. ; Todaka, Takashi ; Enokizono, Masato ; Yamada, Koji ; Jiaolian Luo
Author_Institution :
Oita Prefectural Organ. for Ind. Creation, Oita, Japan
Abstract :
Pulsed high magnetic field generator up to 33T with a long pulsed half-width of 70ms was constructed. Effective fields of coercivity in Nd-Fe-B sintered samples were measured in the pulsed high fields. The measurement errors were estimated experimentally and also by numerical simulations using EMAG. We found errors of coercivity fields of more than 30 % in these samples and discussed on the relationship among the sample insertion gaps in the probe and the systematic errors.
Keywords :
boron alloys; coercive force; iron alloys; magnetic field measurement; measurement errors; neodymium alloys; numerical analysis; sintering; EMAG; Nd-Fe-B; coercivity observation; long pulsed half-width; numerical simulation; pulsed high magnetic field generator; sample insertion gap; sintering sample measurement; systematic measurement error; time 70 ms; Coercive force; Coils; Generators; Magnetic domains; Magnetic field measurement; Magnetic fields; Probes; Nd-B-Fe; coercivity measurements; effective field in magnetic sample; fields up to 33T; numarical simulation; pulsed high;
Conference_Titel :
Sensing Technology (ICST), 2012 Sixth International Conference on
Conference_Location :
Kolkata
Print_ISBN :
978-1-4673-2246-1
DOI :
10.1109/ICSensT.2012.6461794
