T
Taek Sang Hahn
Researcher at Korea Institute of Science and Technology
Publications - 53
Citations - 392
Taek Sang Hahn is an academic researcher from Korea Institute of Science and Technology. The author has contributed to research in topics: Thin film & Josephson effect. The author has an hindex of 10, co-authored 53 publications receiving 385 citations. Previous affiliations of Taek Sang Hahn include Johns Hopkins University Applied Physics Laboratory.
Papers
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Thickness dependence of room temperature permittivity of polycrystalline BaTiO3 thin films by radio-frequency magnetron sputtering
TL;DR: In this paper, the variation in room temperature permittivity of polycrystalline BaTiO3 thin films with thickness ranging from 2100 to 20,000 A were investigated with respect to thickness using x-ray diffraction and transmission electron microscopy.
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Pinning strength dependence of mixed-state Hall effect in YBa2Cu3O7 crystals with columnar defects.
Won Nam Kang,D. H. Kim,S. Y. Shim,Ju-Young Park,Taek Sang Hahn,Sang Sam Choi,W. C. Lee,J. D. Hettinger,Kenneth E. Gray,B. G. Glagola +9 more
TL;DR: The mixed-state Hall effect of twinned YBa{sub 2}Cu{sub 3}O{sub 7} crystals after heavy-ion irradiation clearly showed that the strong pinning induced by columnar defects not only modifies the scaling behavior between the Hall resistivity and longitudinal resistivity, but affects the temperature dependence of the Hall conductivity.
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Electron‐paramagnetic‐resonance study of the Mn2+ luminescence center in ZnS:Mn powder and thin films
TL;DR: In this paper, the number of isolated Mn2+ ions and clusters in ZnS:Mn powder and thin films has been studied using Mn 2+ spectra measured at room temperature with an X-band electron paramagnetic resonance spectrometer.
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Substrate Temperature Dependence of Phase and Orientation of Pulsed Laser Deposited Bi-La-Ti-O Thin Films
Changhoon Kim,Changhoon Kim,Jung-Kun Lee,Hee-Sang Suh,Jae Yun Yi,Kug Sun Hong,Taek Sang Hahn +6 more
TL;DR: In this paper, the phase, orientation, and surface morphology of the deposited films were investigated in order to understand the deposition behavior of the Bi3.25La0.75Ti3O12 (BLT) thin films were grown by pulsed laser deposition at substrate temperatures ranging from 400 to 800°C.
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Effects of a new stacking method on characteristics of multilayered BaTiO3 thin film
TL;DR: In this paper, a new deposition method used to prepare BaTiO3 thin films resulted in multilayered structure with higher dielectric constant, capacitance per unit area, and breakdown strength than those prepared by a conventional stacking method.