Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Yong-Nian Xu"'
Publikováno v:
Journal of the American Ceramic Society. 80:1193-1197
γ-Al2O3 is a defective spinel phase of alumina with cation site vacancies randomly distributed. Its structure and properties are not well understood. There has been long-standing controversy as to whether the cation vacancies are located at the tetr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::449a41d10ccae827bc3401c926c5b7bc
https://doi.org/10.1111/j.1151-2916.1997.tb02963.x
https://doi.org/10.1111/j.1151-2916.1997.tb02963.x
Publikováno v:
Acta Materialia. 53:403-410
It has been known for a long time that Y ions segregate to the grain boundaries (GBs) in polycrystalline alumina with the beneficial effects of enhanced mechanical properties and increased creep resistance. No detailed microscopic theory exists to ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db8feaf277f47a89c9b852a937944571
https://doi.org/10.1016/j.actamat.2004.09.035
https://doi.org/10.1016/j.actamat.2004.09.035
Autor:
Yong-Nian Xu, Wai-Yim Ching
Publikováno v:
Philosophical Magazine B. 80:1141-1151
The electronic structure and bonding in the (Na15/32Bi½)TiO3 (NBT) crystal and its solid solution with BaTiO3 (BT) are studied by first-principles local density calculations. For the solid solution. an ordered superstructure (Na15/32Bi15/32Ba1/16)Ti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f0e869581d6462c1a97692cc979445d
https://doi.org/10.1080/13642810008208587
https://doi.org/10.1080/13642810008208587
Autor:
Wai-Yim Ching, Yong-Nian Xu
Publikováno v:
Journal of Magnetism and Magnetic Materials. 209:28-32
The magnetic properties and Fe moment distributions in a variety of rare-earth Fe compounds are studied by first-principles spin-polarized calculations. Examples are Y2Fe14B, Nd2Fe14B, Y2Fe17, Nd2Fe17, Nd3Fe29 and most recently, Nd5Fe17 phases. Also
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc3213dd1ab65824b5cdc34d5c2fd0a4
https://doi.org/10.1016/s0304-8853(99)00638-1
https://doi.org/10.1016/s0304-8853(99)00638-1
Publikováno v:
Physical Review B. 61:1817-1824
The electronic structure and bonding of Gd{sub 3}Sc{sub 2}Ga{sub 3}O{sub 12} (GSGG), Gd{sub 3}Sc{sub 2}Al{sub 3}O{sub 12} (GSAG), and Gd{sub 3}Ga{sub 5}O{sub 12} (GGG) crystals with a garnet structure are studied by means of first-principles local-de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da1619bf1eb3757e8ecfe857c021a7d8
https://doi.org/10.1103/physrevb.61.1817
https://doi.org/10.1103/physrevb.61.1817
Publikováno v:
Philosophical Magazine B. 79:921-940
Al K, Al L2,3, O K, Y L2,3, and Y M2,3 energy-loss near-edge structures (ELNESs) of Y3Al5O12 (YAG) were measured using a dedicated scanning transmission electron microscope equipped with a parallel electron energy-loss spectrometer system. An attempt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b83633cbd1bce04c46d1a74b7c988d53
https://doi.org/10.1080/13642819908214850
https://doi.org/10.1080/13642819908214850
Autor:
Yong-Nian Xu, Wai-Yim Ching
Publikováno v:
Physical Review B. 59:12815-12821
Based on ab initio calculations of electronic structure and properties of five crystals: $\ensuremath{\alpha}\ensuremath{-}{\mathrm{Al}}_{2}{\mathrm{O}}_{3},$ ${\mathrm{Y}}_{3}{\mathrm{Al}}_{5}{\mathrm{O}}_{12},$ ${\mathrm{YAlO}}_{3},$ ${\mathrm{Y}}_
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61d32b8749d932766f2b005456940016
https://doi.org/10.1103/physrevb.59.12815
https://doi.org/10.1103/physrevb.59.12815
Autor:
Wai-Yim Ching, Yong-Nian Xu
Publikováno v:
Physical Review B. 59:10530-10535
The electronic structure of yttrium aluminum garnet $({\mathrm{Y}}_{3}{\mathrm{Al}}_{5}{\mathrm{O}}_{12})$ is studied by means of first-principles local-density calculations. Results on band structure, density of states, partial density of states, ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc8f373c5e0e8af94ff1c1955b8b602e
https://doi.org/10.1103/physrevb.59.10530
https://doi.org/10.1103/physrevb.59.10530
Publikováno v:
Journal of the American Ceramic Society. 81:3189-3196
The ground state total energies of α- and β-Si3N4 crystals are calculated by an ab-initio method based on local density functional theory. The calculated bulk modulus and pressure coefficients for both crystals are in good agreement with recent exp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::091693547d356d7cb37b916f15d0da48
https://doi.org/10.1111/j.1151-2916.1998.tb02755.x
https://doi.org/10.1111/j.1151-2916.1998.tb02755.x
Publikováno v:
Microsurgery. 18:103-109
Three microsurgical techniques, i.e., electric cauterized vein patch (ECVP), electric cauterized vein segment (ECVS), and electric cauterized muscular cavity (ECMC), were employed to produce an ideal animal model of traumatic pseudoaneurysm (TPA). In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::803b2894e83bcd805766acfca35ceb25
https://doi.org/10.1002/(sici)1098-2752(1998)18:2<103::aid-micr8>3.0.co
https://doi.org/10.1002/(sici)1098-2752(1998)18:2<103::aid-micr8>3.0.co