Electron holographic observation of micro-magnetic fields current-generated from single carbon coil.
A carbon coil was evaluated for use as a micro-solenoid in a small magnetic device. A single carbon coil was lifted out of the aggregate using a tungsten fine probe in a focused ion beam (FIB) system and was wired to two small electrodes in the specimen holder of a transmission electron microscope (TEM). A direct current was supplied to the single carbon coil. A micro/nano-magnetic field generated from the coil was directly observed by electron holography. A computer simulation of electron holography was also done to quantitatively analyze the magnetic field. Details on the FIB technique, the electron holographic observation and the simulation are described.
Yamamoto
Kazuo
K
Japan Society for the Promotion of Science (JSPS), c/o Japan Fine Ceramics Center, 2-4-1, Mutsuno, Atsuta, Nagoya 456-8587, Japan. kazuo.yamamoto@asu.edu
Hirayama
Tsukasa
T
Kusunoki
Michiko
M
Yang
Shaoming
S
Motojima
Seiji
S