negative muon spin spectroscopy for ion diffusion measurements

用于离子扩散测量的负μ子自旋光谱

• 批准号: 20K21149
• 负责人: 杉山 純
• 金额: $ 4.08万
• 依托单位: 一般財団法人総合科学研究機構(総合科学研究センター(総合科学研究室)及び中性子科学センター(研究開発
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Research (Exploratory)
• 财政年份: 2020
• 资助国家: 日本
• 起止时间: 2020-07-30 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20K21149/
• 关键词: イオン拡散; リチウム; 電池; ミュオンスピン回転緩和; 負ミュオン; リチウム電池; 拡散

Liイオン電池の正極材料は、層状岩塩構造、スピネル構造、オリビン構造に大別される。これらについてはmu±SRで核磁場揺らぎの温度依存性を測定し、拡散種がmu+ではなくLi+であることを確認した。この知見を基に、オペランドmu+SR測定によりLixCoO2中のDJを求めたところ、反応面積を規定しやすい薄膜試料の電気化学測定結果とほぼ一致する結果を得た。Li電池材料のmu-SR測定では、ミュオンLi原子（mu-Li）からの信号が不可避的に含まれる。そこで、Li金属単体のmu-SRスペクトルを室温から５Kまでの温度範囲で測定し、横磁場回転スペクトルが緩和しないことを確認した。これはLi核スピンとmu-スピンの超微細結合磁場が大きすぎて、周囲のLi核による双極子磁場を隠してしまうためと思われる。また、大気中で不安定なLi金属でも安定してmu-SR測定できる測定容器も開発済みである。種々のミュオン原子の崩壊により発生する異なる寿命のmu-信号からなるスペクトルの解析法については、理論式を導出し[Muon Spin Spectroscopy: An Introduction (Oxford, 2022)]、さらに実験結果に適合する解析法も提案した。これらの実験と解析結果を2022年8月にパルマ（イタリア）で開催されたmuSR2020国際会議で発表した。ミュオン原子近傍の局所歪みが核磁場へ及ぼす影響については、核磁場を形成するのが双極子磁場なので、影響は少ないと予想している。これは、近接原子間の交換相互作用が重要な電子磁性の場合と比べると大きな相違である。しかしより定量的に影響を見積もるため、ミュオン誘起局所歪み計算の専門家と共同研究を実施中である。

The positive materials of Li thermoelectric cell, the manufacture of peg-shaped rock, the manufacture of metal metal, and the manufacture of metal alloy are very important. The temperature dependence of nuclear magnetic resonance (mu) and temperature dependence of nuclear magnetic resonance (SR) was determined by mu+. The temperature dependence was confirmed by Li+. In this paper, we know that the DJ in the LixCoO2 is required to determine the electrical chemistry of the thin film material, and the results are consistent with the results of the mu+SR measurement. Li cell materials are sensitive to mu-SR measurement, and the Li atomic (mu-Li) temperature response signal is inevitable. The temperature range is measured at room temperature, the temperature range is measured at 5K, the temperature range is measured at room temperature, the temperature range is measured at 5K, the temperature range is measured at room temperature, the temperature range is measured at 5K, the temperature range is measured at room temperature, the temperature range is measured at 5K, the temperature range is measured at room temperature, the temperature range is measured at room temperature, the temperature range is measured at 5K, the temperature range is measured at room temperature, the temperature range is measured at room temperature, the temperature range is measured at 5K, the temperature range is measured at room temperature, the temperature range is measured at 5K, the temperature range is measured at room temperature, the temperature range is measured at room temperature, the temperature range is measured at 5K, the temperature range is measured at room temperature, the temperature range is measured at room temperature, the temperature range is measured at 5K, the temperature In this paper, the Li nuclear power system mu-micrometer is used to combine the magnetic field with the large magnetic field, the Li nuclear magnetic field and the double sub-magnetic field. The stability of Li metal, the stability of metal, the stability of mu-SR, the temperature of the container, the temperature of the container, the temperature, the temperature and the temperature of the container. The analytical method of Muon Spin Spectroscopy: An Introduction (Oxford, 2022)], and the results of the analytical method show that the proposed analytical method is in line with the proposed analytical method. Results in August 2022, the muSR2020 National Council will be urged to review the table. The atom is close to the position where the nuclear magnetic field and the nuclear magnetic field are distorted, and the nuclear magnetic field is formed. The interaction between atoms and adjacent atoms is more important than that of electrons and electrons. The quantitative calculation of the amount of information, the calculation and the calculation of the amount of information that the bureau has made since the beginning of the bureau have been studied together.

项目成果

Negative Muon Spin Rotation and Relaxation Study on Battery Anode Material, Spinel Li4Ti5O12

• DOI: 10.1021/acs.jpcc.2c02055
• 发表时间: 2022-06
• 期刊: The Journal of Physical Chemistry C
• 作者: I. Umegaki;K. Ohishi;T. Nakano;S. Nishimura;S. Takeshita;A. Koda;K. Ninomiya;M. K. Kubo;J. Su

The internal magnetic field in a ferromagnetic compound Y2Co12P7

铁磁化合物 Y2Co12P7 中的内部磁场

• DOI: 10.1088/1742-6596/2462/1/012008
• 发表时间: 2023
• 期刊: Journal of Physics: Conference Series
• 作者: Ohishi Kazuki;Ohta Hiroto;Kato Yusuke;Katori Hiroko Aruga;Forslund Ola K.;Nocerino Elisabetta;Matsubara Nami;Konstantinos Papadopoulos;Johansson Fredrik O. L.;Sassa Yasmine;M?nsson Martin;Hitti Bassam;Arseneau Donald;Morris Gerald D.;Brewer Jess H.;Sugiya
• 通讯作者: Sugiya

Negative muon spin rotation and relaxation study on antiferromagnetic order of Na clusters in sodalite

方钠石Na团簇反铁磁序的负μ子自旋和弛豫研究

• 发表时间: 2022
• 作者: T. Nakano;J. Sugiyama;S. Takeshita;and H. Baba
• 通讯作者: and H. Baba

Magnetic nature of wolframite MnReO4

黑钨矿 MnReO4 的磁性

• 发表时间: 2022
• 作者: E. Nocerino;J. Sugiyama;O. K. Forslund;Y. Sassa;R. Palm;M. Mansson;U. Miniotaite;F. Elson;H. Sakurai;and C. Wang
• 通讯作者: and C. Wang

カナダ加速器センター（TRIUMF）(カナダ)

加拿大加速器中心 (TRIUMF)（加拿大）