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

fYear

2012

fDate

18-21 Dec. 2012

Firstpage

85

Lastpage

88

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensing Technology (ICST), 2012 Sixth International Conference on

Conference_Location

Kolkata

ISSN

2156-8065

Print_ISBN

978-1-4673-2246-1

Type

conf

DOI

10.1109/ICSensT.2012.6461794

Filename

6461794