Demagnetizing Field Caused by Specimen End Gaps in Electromagnet Measurements of Permanent Magnet Materials

Autor:	Du-Xing Chen
Rok vydání:	2019
Předmět:	Physics Condensed matter physics Electromagnet law Magnet Demagnetizing field engineering Cylinder Alnico Radius engineering.material Electronic Optical and Magnetic Materials law.invention
Zdroj:	IEEE Magnetics Letters. 10:1-4
ISSN:	1949-3088 1949-307X
Popis:	The midplane and volume-averaged demagnetizing factors, N mid and Nvol, for a uniformly magnetized cylinder of length l s and radius r s clamped in the pole gap of an electromagnet with end gaps of total length d s are calculated as functions of d s /l s and l s /(2r s ) and used for converting the measured magnetization-field curves of an Alnico specimen for different values of d s . The maximum d s /l s allowed for permanent magnet measurements stated in IEC and ASTM standards are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5adff990d580dd459016a08966f28116 https://doi.org/10.1109/lmag.2019.2912966 Zobrazit plný text záznamu