Search Results - "YANG-KOO CHO"

TEM Observations on 0.65 Pb ( Zr 0.42 Ti 0.58 ) O 3 ‐0.35 Pb ( Ni 0.33 Nb 0.67 ) O 3 Ceramics with CuO Additive by Kim, Young Heon, Ryu, Hyun, Cho, Yang‐Koo, Lee, Hwack‐Joo, Nahm, Sahn

“…The microstructural properties and the chemical compositions of a 0.65 Pb ( Zr 0.42 Ti 0.58 ) O 3 ‐0.35 Pb ( Ni 1/3 Nb 2/3 ) O 3 (0.65 PZT 58‐0.35 PNN )…”
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Laboratory vacuum spectrometer for the soft x-ray region by Yuryev, Yu. N., Lee, Hwack-Joo, Kim, Ju-Hwang, Cho, Yang-Koo, Lee, Min-Kyu, Pogrebitsky, K. Ju

“…A laboratory surface x‐ray absorption near edge structure ((S)XANES) spectrometer used for measurements in the soft x‐ray region is described. The x‐ray beam…”
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TEM Observations on 0.65Pb(Zr0.42Ti0.58)O3-0.35Pb(Ni0.33Nb0.67)O3 Ceramics with CuO Additive by Kim, Young Heon, Ryu, Hyun, Cho, Yang-Koo, Lee, Hwack-Joo, Nahm, Sahn

“…The microstructural properties and the chemical compositions of a 0.65Pb(Zr0.42Ti0.58)O3‐0.35Pb(Ni1/3Nb2/3)O3 (0.65PZT58‐0.35PNN) ceramic system sintered at…”
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Microstructural Observations in (Na 0.5 K 0.5 )NbO 3 Ceramics with CuO and ZnO Additives by Kim, Young Heon, Ryu, Hyun, Cho, Yang-Koo, Lee, Hwack-Joo, Nahm, Sahn

“…The characterizations of CuO and ZnO pockets which had formed in (Na 0.5 K 0.5 )NbO 3 (NKN) matrix sintered at 920 °C with CuO of 1.5 mol % and ZnO of 1.5 and…”
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Transmission Electron Microscopy Microstructure of (K 0.5 Na 0.5 )NbO 3 Ceramics with CuO Addition by Kim, Young Heon, Ryu, Hyun, Lee, Hwack-Joo, Cho, Yang-Koo, Nahm, Sahn

“…The microstructures in Na 0.5 K 0.5 NbO 3 (NKN) ceramics sintered at 960 °C with CuO additives were investigated with transmission electron microscopy (TEM)…”
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Transmission Electron Microscopy Microstructure of 0.95(Na0.5K0.5)NbO3-0.05BaTiO3 Ceramics by Lee, Hwack Joo, Ryu, Hyun, Bae, Moon-Sub, Cho, Yang Koo, Nahm, Sahn

“…Microstructural characterizations using transmission electron microscopy on 0.95(Na0.5K0.5)NbO3–0.05BaTiO3 ceramics sintered at 1030°–1150°C for 2 h were…”
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Positron annihilation in proton irradiated Czochralski-grown Si by UEDONO, A, YANG-KOO CHO, TANIGAWA, S, IKARI, A

“…Defects introduced by 65 MeV proton irradiation into Czochralski-grown Si were investigated by the positron annihilation technique. Doppler broadening profiles…”
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Microstructure and Dielectric Properties of Barium Strontium Magnesium Niobate by Lee, Hwack Joo, Park, Hyun Min, Song, Yong Won, Cho, Yang Koo, Nahm, Sahn, Byun, Jae-Dong

“…Dielectric properties and their related microstructural characteristics in solid solutions of (1 –x)Ba(Mg1/3Nb2/3)O3–xSr(Mg1/3Nb2/3)O3 (BMN–SMN, or BSMN) were…”
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Defects in metalorganic chemical vapor deposition epitaxy-grown ZnSe films on GaAs investigated by monoenergetic positrons by WEI, L, CHO, Y.-K, DOSHO, C, TANIGAWA, S, YODO, T, YAMASHITA, K

“…Defects in metalorganic chemical vapor deposition epitaxy (MOVPE)-grown ZnSe heteroepilayers on GaAs were investigated by monoenergetic positrons. The present…”
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Microstructural Characteristics of Strontium Magnesium Niobate by Lee, Hwack Joo, Park, Hyun Min, Cho, Yang Koo, Song, Yong Won, Nahm, Sahn, Byun, Jae-Dong

“…Microstructural studies were conducted on the domain boundaries in Sr(Mg1/3Nb2/3)O3 (SMN) complex perovskite compound using X‐ray diffractometry and…”
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Microstructure Characterizations in Calcium Magnesium Niobate by Lee, Hwack Joo, Park, Hyun Min, Cho, Yang Koo, Song, Yong Won, Nahm, Sahn, Byun, Jae-Dong

“…Microstructural studies on the domain boundaries in Ca(Mg1/3CNb2/3)O3 (CMN) complex perovskite compound were conducted using X‐ray diffractometry and…”
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The defect characterization of heavily Si-doped molecular beam epitaxy-grown GaAs by the monoenergetic positron method by LONG WEI, YANG-KOO CHO, CHISEI DOSHO, KURIHARA, T, TANIGAWA, S

“…Monoenergetic (100 eV-30 keV) positrons were used as a defect probe for heavily Si-doped GaAs with a thickness of 300nm grown by molecular beam epitaxy (MBE)…”
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Dielectric and Structural Characteristics in Barium Lanthanum Magnesium Niobate by Lee, Hwack Joo, Park, Hyun Min, Cho, Yang Koo, Ryu, Hyun, Paik, Jong Hoo, Nahm, Sahn, Byun, Jae-Dong

“…The dielectric properties and their related microstructural characteristics in solid solutions of (1 —x)Ba(Mg1/3Nb2/3)O3 (BMN)—xLa(Mg2/3Nb1/3)O3 (LMN) (BLMN)…”
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Study on momentum density of electrons and Fermi surface in niobium by positron annihilation by KUBOTA, T, KONDO, H, WATANABE, K, MURAKAMI, Y, YANG-KOO CHO, TANIGAWA, S, KAWANO, T, GUN-WOONG BAHNG

“…The three dimensional electron-positron momentum density in niobium has been reconstructed from measurements of two dimensional angular correlation of positron…”
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Variable-energy positron studies of vacancy-type defects in TiN films on Si by WEI, L, DOSHO, C, YANG-KOO CHO, TANIGAWA, S, HINODE, K

“…A variable-energy (0–30 keV) positron beam has been used as a nondestructive probe for titanium nitride (TiN) films with a thickness of 800 nm deposited on Si…”
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Microstructural Observations in Barium Calcium Magnesium Niobate by Lee, Hwack Joo, Park, Hyun Min, Cho, Yang Koo, Ryu, Hyun, Song, Yong Won, Paik, Jong Hoo, Nahm, Sahn, Byun, Jae-Dong

“…Microstructural studies on (1 −x)Ba(Mg1/3Nb2/3)O3–xCa(Mg1/3Nb2/3)O3 (BCMN) complex perovskite compounds, which are mixtures of Ba(Mg1/3Nb2/3)O3 (BMN) and…”
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Crystal structure refinement of (Ba1-xLax)[Mg(1+x)/3Nb(2-x)/3]O3 with 0.3 ≤ x ≤ 0.7 by Rietveld method by HYUN MIN PARK, HWACK JOO LEE, YONG WON SONG, YANG KOO CHO, NAHM, Sahn, BYUN, Jae-Dong

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Two Types of Domain Boundaries in Lanthanum Magnesium Niobate by Lee, Hwack Joo, Park, Hyun Min, Cho, Yang Koo, Song, Yong Won, Paik, Jong Hoo, Nahm, Sahn, Byun, Jae-Dong

“…Microstructural studies of the domain boundaries in the complex perovskite compound lanthanum magnesium niobate (La[Mg2/3Nb1/3]O3, LMN) were conducted using…”
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High-Resolution Transmission Electron Microscopy Observations on Antiphase Boundaries in Barium Lanthanum Magnesium Niobate by Lee, Hwack Joo, Park, Hyun Min, Song, Yong Won, Cho, Yang Koo, Nahm, Sahn

“…Atomic structural observations on the antiphase boundaries (APBs) in the complex barium lanthanum magnesium niobate perovskite compound…”
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Investigation of Positron Moderator Materials for Electron-Linac-Based Slow Positron Beamlines by Suzuki, Ryoichi, Ohdaira, Toshiyuki, Uedono, Akira, Cho, Yang Koo, Yoshida, Sadafumi, Ishida, Yuuki, Ohshima, Takeshi, Itoh, Hisayoshi, Chiwaki, Mitsukuni, Mikado, Tomohisa, Yamazaki, Tetsuo, Tanigawa, Shoichiro

“…Positron re-emission properties were studied on moderator materials in order to improve the positron moderation system of electron-linac-based intense slow…”
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