Evaluation of bonding nature in Al-based quasicrystals by positron annihilation spectroscopy

正电子湮没光谱评价铝基准晶的成键性质

• 批准号: 21860021
• 负责人: TAKAGIWA Yoshiki
• 金额: $ 1.71万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Research Activity Start-up
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21860021/
• 关键词: 金属物性; 格子欠陥; 環境材料; 廃熱利用; 放射線

Our main goal is to establish a method of evaluation of bonding-nature in Al-based quasicrystals by positron annihilation spectroscopy. Al-based quasicrystals, which possess the pseudogap near the Fermi level, are novel candidates for new thermoelectric materials.We observed the clear correlation between the positron annihilation rate and electrical conductivity in various Al-based quasicrystals and related materials. The present correlation can be used to discuss the bonding nature in icosahedral clusters of the Al-based QCs. Establishing a method of evaluating the bonding nature of the Al-based QCs is necessary for future designs of material, such as thermoelectric materials.

我们的主要目标是建立一种用正电子湮没光谱评价铝基准晶体成键性质的方法。铝基准晶体具有接近费米能级的赝隙，是新型热电材料的新候选材料。我们观察到各种al基准晶体和相关材料的正电子湮灭率与电导率之间有明显的相关性。这种相关性可以用来讨论铝基量子晶体在二十面体簇中的成键性质。建立一种评估铝基qc键合性质的方法对于未来材料的设计是必要的，例如热电材料。

项目成果

Al-Cu-Ru三元系系準結晶及び近似結晶の熱電特性

Al-Cu-Ru三元准晶及近似晶体的热电性能

• 发表时间: 2011
• 作者: 北原功一;高際良樹;木村薫
• 通讯作者: 木村薫

Possibility of Evaluation of Bonding Naturc of Al-based Icosahedral Quasicrystals using Positron Annihilation Rates

用正电子湮灭率评价铝基二十面体准晶的键合性质的可能性

• 发表时间: 2010
• 作者: Y.Takagiwa;K.Kimura;I.Kanazawa
• 通讯作者: I.Kanazawa

Self-Compensation and Bonding Conversion in B-based and Al based-Icosahedral Clusters Solids

B基和Al基二十面体团簇固体中的自补偿和键合转变

• 发表时间: 2010
• 作者: K.Kimura;H.Hyodo;Y.Takagiwa;K.Kirihara;K.Soga;K.Kato;M.Takata
• 通讯作者: M.Takata

Al-Cu-Ru三元系準結晶及び近似結晶の熱電特性

Al-Cu-Ru三元准晶及近似晶体的热电性能

• 发表时间: 2011
• 作者: K.Nagato;S.Hattori;T.Hamguchi;M.Nakao;北原功一,高際良樹,木村薫
• 通讯作者: 北原功一,高際良樹,木村薫

Thermoelectric Properties of Narrow-Gap Intermetallic Al_2Ru and Ga_2Ru Compounds

窄间隙金属间化合物Al_2Ru和Ga_2Ru的热电性能

• 发表时间: 2010
• 作者: Y.Takagiwa;Y.Matsubayashi;J.T.Okada;K.Kimura
• 通讯作者: K.Kimura