Article(id=1322941132849685295, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1322940910270559211, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1190044800000, receivedDateStr=2007-09-18, revisedDate=1195142400000, revisedDateStr=2007-11-16, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343345129, onlineDateStr=2026-10-30, pubDate=1220544000000, pubDateStr=2008-09-05, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343345129, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343345129, creator=13701087609, updateTime=1793343345129, updator=13701087609, issue=Issue{id=1322940910270559211, tenantId=1146029695717560320, journalId=1255847867265597444, year='2008', volume='22', issue='3', pageStart='225', pageEnd='336', issueExtLink='null', onlineDate='null', pubDate='1220544000000', pubDateStr='2008-09-05', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343292062, creator='13701087609', updateTime=1793343292062, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=225, endPage=231, ext={EN=ArticleExt(id=1322941133231366961, articleId=1322941132849685295, tenantId=1146029695717560320, journalId=1255847867265597444, language=EN, title=Pressure Effects on the Behavior of Helium in Niobium, columnId=null, journalTitle=Chinese Journal of High Pressure Physics, columnName=null, runingTitle=null, highlight=null, articleAbstract=

By combining pseudopotential plane-wave method at 0 K with Car-Parrinello molecular dynamics at finite temperature, the behavior and aggregation of helium in niobium are simulated under different pressures. The result shows that the closed-shell helium atom plays a role of rigid-ball such that to destroy local metallic bonds of niobium and push away the near free electrons. Under ambient pressure and room temperature, locally high concentrated helium atoms immigrate towards the vacancy site, resulting in helium bubbles. The same helium density of He will dislocate Nb atom, forming an interstitial-vacancy pair for the helium bubble formation. Under high pressures up to 40 GPa, no bubble is observed in perfect Nb host lattice due to the failure of interstitial-vacancy formation.

, authors=Zhi-Ming LIU, Tian CUI, Wen-Jong HE, Guang-Tian ZOU, Meng-Fu WEI, Chang-An CHEN, authorsList=Zhi-Ming LIU, Tian CUI, Wen-Jong HE, Guang-Tian ZOU, Meng-Fu WEI, Chang-An CHEN, authorCompany=null, correspAuthors=Tian CUI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322941133696934707, articleId=1322941132849685295, tenantId=1146029695717560320, journalId=1255847867265597444, language=CN, title=压力对金属铌中氦原子凝聚的影响, columnId=0, journalTitle=高压物理学报, columnName=, runingTitle=null, highlight=null, articleAbstract=

采用零温条件下的赝势-平面波方法和有限温度下的Car-Parrinello分子动力学方法,模拟了不同压力环境下氦原子在金属铌中的行为特征,研究了宿主缺陷和氦泡的形成机制。结果表明,闭电子壳层的氦原子在金属铌中具有刚球模型特征,其占据区域为金属自由电子的禁区,从而破坏铌原子之间的金属性键合。在常温条件下,局域高浓度的氦原子优先凝聚于近邻宿主空位缺陷处,从而形成氦泡;完整晶格中高浓度的氦将促使铌原子易位,形成间隙-空位模式的宿主缺陷,氦原子聚集于空位区域。完整宿主在压力(40 GPa)的作用下,晶格参数减小,铌原子之间的相互作用增强,尽管氦原子的存在削弱了铌原子之间的相互作用,位于格点上的铌原子仍难以借助热振动偏离格点形成空位,因而未能形成间隙-空位对和氦泡。

, authors=刘志明, 崔田, 何文炯, 邹广田, 韦孟伏, 陈长安, authorsList=刘志明, 崔田, 何文炯, 邹广田, 韦孟伏, 陈长安, authorCompany=null, correspAuthors=崔田, authorNote=

刘志明(1965—),男,博士研究生. E-mail:

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崔田,教授,博士研究生导师,主要研究方向为凝聚态理论与计算机模拟. E-mail:
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压力对金属铌中氦原子凝聚的影响
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刘志明 , 崔田 , 何文炯 , 邹广田 , 韦孟伏 , 陈长安
高压物理学报 | 2008,22(3): 225-231
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高压物理学报 | 2008 , 22 (3) : 225 -231
压力对金属铌中氦原子凝聚的影响
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刘志明 , 崔田 , 何文炯, 邹广田, 韦孟伏, 陈长安
作者信息
  • 吉林大学超硬材料国家重点实验室,吉林 长春 130012
通讯作者:
崔田,教授,博士研究生导师,主要研究方向为凝聚态理论与计算机模拟. E-mail:
作者简介:

刘志明(1965—),男,博士研究生. E-mail:

Pressure Effects on the Behavior of Helium in Niobium
Zhi-Ming LIU , Tian CUI , Wen-Jong HE, Guang-Tian ZOU, Meng-Fu WEI, Chang-An CHEN
Affiliations
  • National Laboratory of Superhard Material, Jilin University, Changchun 130012, China
出版时间: 2008-09-05
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采用零温条件下的赝势-平面波方法和有限温度下的Car-Parrinello分子动力学方法,模拟了不同压力环境下氦原子在金属铌中的行为特征,研究了宿主缺陷和氦泡的形成机制。结果表明,闭电子壳层的氦原子在金属铌中具有刚球模型特征,其占据区域为金属自由电子的禁区,从而破坏铌原子之间的金属性键合。在常温条件下,局域高浓度的氦原子优先凝聚于近邻宿主空位缺陷处,从而形成氦泡;完整晶格中高浓度的氦将促使铌原子易位,形成间隙-空位模式的宿主缺陷,氦原子聚集于空位区域。完整宿主在压力(40 GPa)的作用下,晶格参数减小,铌原子之间的相互作用增强,尽管氦原子的存在削弱了铌原子之间的相互作用,位于格点上的铌原子仍难以借助热振动偏离格点形成空位,因而未能形成间隙-空位对和氦泡。

第一性原理  /  分子动力学  /  压力效应  /  杂质  /  氦泡

By combining pseudopotential plane-wave method at 0 K with Car-Parrinello molecular dynamics at finite temperature, the behavior and aggregation of helium in niobium are simulated under different pressures. The result shows that the closed-shell helium atom plays a role of rigid-ball such that to destroy local metallic bonds of niobium and push away the near free electrons. Under ambient pressure and room temperature, locally high concentrated helium atoms immigrate towards the vacancy site, resulting in helium bubbles. The same helium density of He will dislocate Nb atom, forming an interstitial-vacancy pair for the helium bubble formation. Under high pressures up to 40 GPa, no bubble is observed in perfect Nb host lattice due to the failure of interstitial-vacancy formation.

first principles  /  molecular dynamics  /  pressure effect  /  impurity  /  helium bubbles
刘志明, 崔田, 何文炯, 邹广田, 韦孟伏, 陈长安. 压力对金属铌中氦原子凝聚的影响. 高压物理学报, 2008 , 22 (3) : 225 -231 .
Zhi-Ming LIU, Tian CUI, Wen-Jong HE, Guang-Tian ZOU, Meng-Fu WEI, Chang-An CHEN. Pressure Effects on the Behavior of Helium in Niobium[J]. Chinese Journal of High Pressure Physics, 2008 , 22 (3) : 225 -231 .
  • 国家自然科学基金(10574053; 10674053)
  • 2003年度教育部优秀青年教授资助计划
  • 2004年教育部新世纪优秀人才支持计划
  • 国家重点基础研究发展计划项目(2005CB724400; 2001CB711201)
  • 教育部科技创新工程重大项目培育资金(2004_295)
  • 2007年度长江学者奖励计划以及长江学者创新团队计划(IRT0625)
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2008年第22卷第3期
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文章信息
  • 接收时间:2007-09-18
  • 首发时间:2026-10-30
  • 出版时间:2008-09-05
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出版历史
  • 收稿日期:2007-09-18
  • 修回日期:2007-11-16
基金
国家自然科学基金(10574053; 10674053)
2003年度教育部优秀青年教授资助计划
2004年教育部新世纪优秀人才支持计划
国家重点基础研究发展计划项目(2005CB724400; 2001CB711201)
教育部科技创新工程重大项目培育资金(2004_295)
2007年度长江学者奖励计划以及长江学者创新团队计划(IRT0625)
作者信息
    吉林大学超硬材料国家重点实验室,吉林 长春 130012

通讯作者:

崔田,教授,博士研究生导师,主要研究方向为凝聚态理论与计算机模拟. E-mail:
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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