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cenwanglai新蟲
老和山猥瑣派九段
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[求助]
NiO(111)面的Octopolar重構(gòu)
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| NiO是一種NaCl型結(jié)構(gòu),(111)面由陽離子和陰離子交替出現(xiàn)。有兩篇PRL指出,NiO(111)的O-terminated表面不穩(wěn)定,會(huì)按照Octopolar reconstruction方式重構(gòu).一篇JPCC做了CO在NiO(111)面上的氧化計(jì)算,做出的Octopolar reconstruction表面是刪掉最表層3/4的O原子和次表層1/4的Ni原子。如果這樣做,Ni:O就不是1:1的計(jì)量結(jié)構(gòu)了。求解釋。 |
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禁蟲
老和山猥瑣派九段
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專家經(jīng)驗(yàn): +20 |
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"Ni:O?????1:1?????????" ?????????]????] 1:1 ?@?N???} ?????f ?]?k?????]?@?N???} ?@???? alloy surface ???y????? ?????@????f NiO(111) ??? double layer ???? ~ ??? O ??? Ni ?????? The NiO(111) surface was modeled by a slab with six NiO double layers and a vacuum equivalent to six double layers between two successive slabs. ????????????? NiO bi-layer ????? O-terminated NiO surface ????? O 4 atoms Ni 4 atoms O 4 atoms Ni 4 atoms O 4 atoms Ni 4 atoms O 4 atoms Ni 4 atoms O 4 atoms Ni 4 atoms O 4 atoms Ni 4 atoms ?????? bi-layer ????}???? ?????? O-terminated ????? CO ????????~~??????? Ni-terminated ? ??????? 6.5 ?? bi-layer ?? ??????????? O-terminated (???????????? O) ?@???????? ???????V?? ?@??N????????????? ???????????c????????? ??????????????? ??????? ???????????????X?? "??~????????????????~???" ?@???о?????????????????????x |
無蟲
老和山猥瑣派九段
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1. лл?????????????????????????????????????????????е?????????????????????????????? 2. ?????????????1???????????е??????????????????????Page 5?"In this study, we used a p(2*2) O-terminated octopolar NiO(111) surface with 3/4 ML O missing in the top layer and 1/4 ML Ni missing in the second layer." 3. ?????????7 double layer??p(2*2) slab, ??????????飬???????????Ni????????????????????1??????????????????????????????????????????????????.cif????????? [ Last edited by cenwanglai on 2013-11-13 at 07:18 ] |
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專家經(jīng)驗(yàn): +20 |
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?????????????1???????????е?????????Page 5?"In this study, we used a p(2*2) O-terminated octopolar NiO(111) surface with 3/4 ML O missing in the top layer and 1/4 ML Ni missing in the second layer."?????????7 double layer??p(2*2) slab, ??????????飬???????????Ni??????????? ???@??]???} 5L, 6L, 7L ???]???} ?????]???}..... ???????????????????????????????????????????????????.cif????????? ?@?e??????? "????????????????" ... ?@?????... ?? ????????? model ????? ideal ?? NiO(111) surface ??t???@???????????????? (?????f???????) ?????????????c???? Ni ?B?? ???? dangling bond ?a?? ?K?? paper ??? model ??????????PAPER??? MODEL ??????????????? (3 ?w) ??е???? Ni (1?w) ??? surface relaxation (reconstruction) ????? paper ??? model .... (????????@???? @_@?) |
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