Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Jun-Sig Kum"'
Publikováno v:
Hyperfine Interactions. 2004, Vol. 156/157 Issue 1-4, p169-174. 6p.
Autor:
Seok Bae, Jaejin Lee, Yang-Ki Hong, Gavin S. Abo, Jun-Sig Kum, Jihoon Park, Won-Mo Seong, Jeevan Jalli, Sang-Hoon Park, Won-Ki Ahn
Publikováno v:
IEEE Transactions on Magnetics. 46:2361-2364
Miniaturized 0.026 ? Co2Z hexaferrite and Ni-Mn-Co spinel ferrite T-DMB antennas were fabricated and characterized for antenna performance. The Co2Z hexaferrites were prepared with two different processes that are water quenching and air cooling. The
Autor:
Jaejin Lee, Jun-Sig Kum, Gi-Ho Kim, Jeevan Jalli, Sang-Hoon Park, Won Mo Sung, Hyuck M. Kwon, Seok Bae, Yang-Ki Hong, Gavin S. Abo
Publikováno v:
IEEE Transactions on Magnetics. 45:4199-4202
We fabricated 0.029 lambda miniaturized Co2Z hexaferrite terrestrial digital multimedia broadcasting (T-DMB) antenna. T-DMB antenna was fabricated by winding 12-turn Cu tape around the Co2Z rectangular block. Antenna was mounted on the ground substra
Publikováno v:
Electronic Materials Letters. 5:67-71
Electromagnetic properties of dielectric and magnetic composite materials were studied with various weight fractions and particle sizes of ferrite. The composite materials were prepared through Ni-Zn spinel ferrite and silicon elastomer, and were cha
Autor:
Seok Bae, Yang-Ki Hong, Jun-Sig Kum, Jaejin Lee, Won-Mo Seong, Gavin S. Abo, Sang-Hoon Park, Jeevan Jalli, I. T. Nam, A. Lyle
Publikováno v:
IEEE Transactions on Magnetics. 45:2557-2560
Z-type barium hexaferrite particles were synthesized by a one-step mixing-calcination process (MCP) and its magnetic properties were characterized and compared to the sol-gel (SGP) and the conventional ceramic (CCP) processed Z-type Ba hexaferrite wi
Publikováno v:
Journal of the Korean Magnetics Society. 14:46-50
Publikováno v:
Hyperfine Interactions. :169-174
Magnetic and crystallographic properites of Y3−x Ce x Fe5O12 (x=0.0, 0.1, and 0.3) have been studied with X-ray diffraction, vibrating sample magnetometer (VSM), and Mossbauer spectroscopy. A small coercivity (H c =5.8 Oe), was obtained for the sam
Publikováno v:
IEEE Transactions on Magnetics. 40:2808-2810
The crystallographic and magnetic properties of Tb/sub 3/Fe/sub 5/O/sub 12/ were studied using X-ray diffraction, vibrating sample magnetometer (VSM), and Mo/spl uml/ssbauer spectroscopy. The crystal structure were found to have a single phase of gar
Publikováno v:
Journal of Magnetism and Magnetic Materials. :2227-2229
Y2.9Ce0.1Fe5O12 powders which were annealed above 1200°C had only a single phase garnet cubic structure and showed ferrimagnetic behaviors. Powders annealed below 1200°C had mixed phases of garnet, α-Fe2O3, and YFeO3 structures. The magnetic behav
Publikováno v:
IEEE Transactions on Magnetics. 39:3118-3120
Compounds of composition of Y/sub 3-x/Ce/sub x/Fe/sub 5/O/sub 12/ (x=0.0, 0.1, and 0.3) were prepared using the sol-gel method. The vibrating samples magnetometer measurements showed no sizable changes in saturation magnetization. A small coercivity