Field-Induced Translation of Single Ferromagnetic and Ferrimagnetic Grain as Observed in the Chamber-type μG System

서지정보

· 발행기관 : 한국자기학회
· 수록지 정보 : Journal of Magnetics / 18권 / 3호 / 308 ~ 310페이지
· 저자명 : Kento Kuwada, Chiaki Uyeda, Keiji Hisayoshi, Hideaki Nagai, Mikito Mamiya

초록

Translation induced by the field-gradient force is being observed for a single ferromagnetic iron grain and a ferrimagnetic grain of a ferrite sample (CuFe2O4). From measurements on the translation, precise saturated magnetization of MS is possible for a single grain. The method is based on the energy conservation rule assumed for the grain during its translation and the grain is translated through a diffuse area under microgravity conditions. The results of the two materials indicate that a field-induced translation of grain bearing spontaneous moment is generally determined by a field-induced potential -mMSH(x) where m denotes the mass of sample. According to the above translations, the detection of MS is not interfered by any signals from the sample holder. The MS measurement does not require m value. By observing translations resulting from fieldinduced volume forces, the magnetization of a single grain is measurable irrespective of its size; the principle is also applicable to measuring susceptibility of diamagnetic and paramagnetic materials.

참고자료

· 없음