Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Jeong Oh Hong"'
Autor:
Eui-Chol Shin, Jee-Hoon Kim, Jeong-Oh Hong, Jong-Sook Lee, Dong-Kyu Shin, Hyun-Ho Seo, Pyung-An Ahn, Chang-Hoon Kim, Jung-Mo Jo, Kang-Heon Hur, Yong Kim, Ji-Young Park, Young-Hun Kim, Gye-Rok Kim
Publikováno v:
Journal of the Korean Ceramic Society. 49:475-483
High capacitance X5R MLCCs based on BaTiO₃ ceramic dielectric layers exhibit a single broad, asymmetric arc shape impedance and modulus response over the wide frequency range between 1 MHz to 0.01 Hz. Analysis according to the conventional brick-la
Publikováno v:
Journal of the Korean Ceramic Society. 46:161-169
MLCC (Multi-layer Ceramic Capacitor) is the most important passive component in electronic devices such as HHP, PC and digital display. The development trend of MLCC is a miniaturization with increasing the capacitance. In this paper, a development h
Publikováno v:
Journal of the Korean Ceramic Society. 46:170-174
powder was synthesized by the solid-state reaction of fine and raw materials. Fine grinding media of 50 and 300 microns were used for obtaining fine particulate mixture of and with high homogeneity. Effect of the size of grinding media on the synthes
Publikováno v:
Japanese Journal of Applied Physics. 47:5526-5529
The capacitance aging of multilayer ceramic capacitors (MLCCs) based on BaTiO3 dielectrics under DC electric fields has been studied. At a DC field of 1 V/µm, the capacitance of MLCC specimens decreased immediately in a very short period (
Publikováno v:
Journal of the European Ceramic Society. 28:1213-1219
To understand the contribution of additive elements to the formation of core-shell structure in BaTiO 3 (BT) grains in multilayer ceramic capacitors, specimens were prepared with BT powders mixed with Y and Mg, and their microstructures were investig
Autor:
Junichiro Mizusaki, Yutaka Nigara, Jeong Oh Hong, Tatsuya Kawada, Keiji Yashiro, Masatsugu Oishi
Publikováno v:
Solid State Ionics. 178:307-312
Recently, B-site doping in the perovskite-type oxides has often been carried out to control various properties. One of the perovskite-type oxides, doped LaCrO 3 , is the candidate for the interconnector for Solid Oxide Fuel Cells (SOFC). For its stab
Publikováno v:
Solid State Ionics. 171:61-67
The atomic hydrogen (H) permeability, J H , of 10YSZ single crystal (fluorite-type) was measured at 1800–1050 K using the Nigara-method . Two tubular specimens (φ 1.30×0.93 cm; length: 3.35 cm (Specimen(L)) and 1.00 cm (Specimen(S))), annealed at
Autor:
Jeong Oh Hong, Tatsuya Kawada, Kenichi Kawamura, Yutaka Nigara, Shogo Miyoshi, Junichiro Mizusaki, Keiji Yashiro, Atsushi Kaimai
Publikováno v:
Solid State Ionics. 161:209-217
Volume variation of dense LaMnO 3+ δ specimens was measured at elevated temperatures and in stepwise changes of oxygen partial pressure. The specimen expanded upon reduction at fixed temperatures, and its dependence on temperature and oxygen partial
Autor:
Yutaka Nigara, Atsushi Kaimai, Jeong Oh Hong, Keiji Yashiro, Junichiro Mizusaki, Tatsuya Kawada, Kenichi Kawamura, Shogo Miyoshi
Publikováno v:
Solid State Ionics. :257-263
In order to identify the majority ionic defect of La 1− x Sr x MnO 3+ δ in the oxygen-excess region, a dilatometry was made on La 0.96 MnO 2.94+ δ at a fixed temperature (1273 K) by varying the ambient oxygen partial pressure. The specimen of La
Autor:
Han-Ill Yoo, Jeong-Oh Hong
Publikováno v:
Journal of Materials Research. 17:1213-1219
The effective valence,of mobile cations (Fe2+, Fe3+) in semiconducting Fe3O4was determined at elevated temperatures via Tubandt-type electrotransport experiments in association with the literature data on the cation diffusivity and total electrical c