Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Geun Kyu Choi"'
Publikováno v:
Materials Research Bulletin. 44:173-178
Various rare earth orthophosphates, such as monazite and xenotime RePO4 (Re = La, Ce, Nd, Sm, Tb, Dy, Y, Yb) were prepared by a conventional solid-state reaction method. The crystal structure and microstructure of the sintered ceramics were investiga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4eaf43dc8342e468b5b3637785bf694
https://doi.org/10.1016/j.materresbull.2008.03.016
https://doi.org/10.1016/j.materresbull.2008.03.016
Autor:
Sang-Wook Lee, Kug Sun Hong, Jun Hong Noh, In Sun Cho, Geun Kyu Choi, Hyun Suk Jung, Dong Wan Kim
Publikováno v:
The Journal of Physical Chemistry C. 112:18393-18398
A novel method was used to synthesize orthorhombic FeNbO4 nanoparticles by a hydrothermal process followed by calcination at 600 °C, and their optical, photoelectrochemical, and photocatalytic properties were investigated. The microstructural and lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::166dadb385d0abac84c669770ce75359
https://doi.org/10.1021/jp807006g
https://doi.org/10.1021/jp807006g
Publikováno v:
Thin Solid Films. 516:2195-2202
Since Bi 2 O 3 –ZnO–Nb 2 O 5 (BZN) pyrochlore thin films have been introduced as a tunable dielectric, the substitution of Bi with Pb could be a reasonable choice. The PbO–ZnO–Nb 2 O 5 (PZN) cubic pyrochlore thin films were produced by radio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdf21061963ea46bfc6ec4ebb0c5627e
https://doi.org/10.1016/j.tsf.2007.07.149
https://doi.org/10.1016/j.tsf.2007.07.149
Publikováno v:
Materials Letters. 61:5232-5235
PMN thin films have been investigated as a feasible material for tunable microwave applications. PMN thin films were deposited by RF magnetron sputtering from Pb 6 MgNb 6 O 22 ceramic target on platinized Si substrates. The crystallinity, thickness,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f710f147c9a0c5763d98ab5b68dcb7c
https://doi.org/10.1016/j.matlet.2007.04.036
https://doi.org/10.1016/j.matlet.2007.04.036
Publikováno v:
Journal of the European Ceramic Society. 27:3063-3067
The microwave dielectric properties of scheelite (A = Ca, Sr, Ba) and wolframite (A = Mg, Mn, Zn) AMoO4 compounds and their relations with structure have been examined using a network analyzer and X-ray powder diffraction. The Mo ion polarizability h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f07310040c6fc4492b36650d63cfe115
https://doi.org/10.1016/j.jeurceramsoc.2006.11.037
https://doi.org/10.1016/j.jeurceramsoc.2006.11.037
Publikováno v:
Journal of the European Ceramic Society. 27:3087-3091
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9df612951caefb5e638966650e08f2ec
https://doi.org/10.1016/j.jeurceramsoc.2006.11.035
https://doi.org/10.1016/j.jeurceramsoc.2006.11.035
Publikováno v:
Journal of Electroceramics. 17:65-69
Glasses in the ZnO-B2O3-MO3(M = W, Mo) ternary were examined as potential replacements to PbO-B2O3-SiO2-ZnO glass frits with the low firing temperature (500–600∘C) for the dielectric layer of a plasma display panels (PDPs). Glasses were melted in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c09e4ae69ae3602af97cdef5b5fcca0
https://doi.org/10.1007/s10832-006-9938-5
https://doi.org/10.1007/s10832-006-9938-5
Publikováno v:
Journal of the European Ceramic Society. 26:2011-2015
The microwave dielectric properties, sintering behaviors of scheelite compound CaMoO 4 were investigated using dilatometry, X-ray diffraction, scanning electron microscopy and network analyzer. To improve the sintering property of CaMoO 4 , samples w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3544892b1a01b2932fd1f31f7ad1add
https://doi.org/10.1016/j.jeurceramsoc.2005.09.051
https://doi.org/10.1016/j.jeurceramsoc.2005.09.051
Publikováno v:
Ceramics International. 30:1187-1190
The dielectric properties of the monoclinic zirconolite-like structure compound, Bi 2 (Zn 1/3 Nb 2/3 − x V x ) 2 O 7 (0≤ x ≤0.1), were investigated. We found a small vanadium substitution ( x ) to Bi 2 (Zn 1/3 Nb 2/3 ) 2 O 7 ceramics lowered si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddba0318cd5bb9e71348ed35b257fcb4
https://doi.org/10.1016/j.ceramint.2003.12.034
https://doi.org/10.1016/j.ceramint.2003.12.034
Autor:
Ik Jae Park, Dong Hoe Kim, Tae Hoon Noh, Geun Kyu Choi, Dong Wan Kim, Jae Sul An, Chin Moo Cho, Kug Sun Hong, Hee Suk Roh
Publikováno v:
Dalton transactions (Cambridge, England : 2003). 40(26)
We demonstrated the formation of monodispersed spherical aluminum hydrous oxide precursors with tunable sizes by controlling the variables of a forced hydrolysis method. The particle sizes of aluminum hydrous oxide precursors were strongly dependent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab0e35e76cff1513c23574ae076ce1a7
https://pubmed.ncbi.nlm.nih.gov/21647496
https://pubmed.ncbi.nlm.nih.gov/21647496