Resonant echo study on ion dynamics in superionic conductors
超离子导体中离子动力学的共振回波研究
基本信息
- 批准号:15540315
- 负责人:
- 金额:$ 1.6万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2003
- 资助国家:日本
- 起止时间:2003 至 2004
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Two-pulse phonon echo measurements were performed in the micro particles of polycrystalline and single crystalline LiNbO_3 from room temperature to 900 K to investigate the relationship between lithium ionic diffusion and decay time, T2, in the phonon echo. The decay time was dependent on temperature, showing a rapid decrease above 800 K in the polycrystalline sample. The origin of this anomaly is interpreted in terms of a simple Debye-type relaxation due to the lithium ionic diffusion. The activation energy of the lithium ionic diffusion was evaluated to be 0.93 eV in the polycrystalline samples, which is comparable with reported values from ionic conductivity and NMR results. On the other hand, single crystalline LiNbO_3 showed no sign of lithium ionic diffusion up to 900 K. The contribution to T_2 from the lithium ionic diffusion would be dominant at higher temperatures than 900 K because of much higher activation energy in the single crystalline sample. These facts show that the decay time in the phonon echo is strongly connected with ionic diffusion in the particles.Li^+ ionic diffusion was observed in lithium transition-metal oxides, LiCuO_2 and Li_xV_2O_5 using NMR technique. The activation energy of LiCuO2 is comparable with that of in LiCoO_2. In Li_xV_2O_5, the large activation energy beyond 0.5 eV, which might arose from the phase transition among of ε, δ and γ-phase at high temperatures, was observed.
在多晶和单晶LiNbO_3的微粒子中进行了从室温到900 K的双脉冲声子回波测量,研究了声子回波中锂离子扩散与衰减时间T2的关系。的衰减时间是依赖于温度,在多晶样品中显示出快速下降800 K以上。这种异常的起源解释在一个简单的德拜型松弛由于锂离子扩散。锂离子扩散的活化能被评估为0.93 eV的多晶样品中,这是可比的从离子电导率和NMR结果的报道值。而LiNbO_3单晶在900 K以下没有锂离子扩散的迹象。在900 K以上的温度下,由于单晶样品中锂离子扩散的激活能较高,锂离子扩散对T_2的贡献占主导地位。用核磁共振技术在锂过渡金属氧化物LiCuO_2和Li_xV_2O_5中观察到Li^+离子的扩散。LiCuO_2的活化能与LiCoO_2相当。在Li_xV_2O_5中观察到大于0.5eV的激活能,这可能是由于高温下ε、δ和γ相之间的相变引起的。
项目成果
期刊论文数量(26)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Phonon echo study on lithium ionic diffusion in LiNbO_3 powder
LiNbO_3粉末中锂离子扩散的声子回波研究
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:佐藤清隆;上野聡;Koichi Nakamura et al.;Koichi Nakamura et al.;Koichi Nakamura et al.;中村浩一 他;Koichi Nakamura et al.
- 通讯作者:Koichi Nakamura et al.
Phonon echo study on lithium tonic diffusion in LiNbO_3 powder
LiNbO_3粉末中锂补强扩散的声子回波研究
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:佐藤清隆;上野聡;Koichi Nakamura et al.;Koichi Nakamura et al.
- 通讯作者:Koichi Nakamura et al.
NMR Study on Li^+ Ionic Diffusion in Li_xV_2O_5 Prepared by Solid State Reaction
固相反应制备Li_xV_2O_5中Li^离子扩散的NMR研究
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:佐藤清隆;上野聡;Koichi Nakamura et al.;Koichi Nakamura et al.;Koichi Nakamura et al.
- 通讯作者:Koichi Nakamura et al.
Observation of ionic diffusion in LiNbO_3 by phonon echo method (in Japanese)
声子回波法观察LiNbO_3中的离子扩散(日文)
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:佐藤清隆;上野聡;Koichi Nakamura et al.;Koichi Nakamura et al.;Koichi Nakamura et al.;中村浩一 他;Koichi Nakamura et al.;Koichi Nakamura et al.;Koichi Nakamura et al.
- 通讯作者:Koichi Nakamura et al.
NMRからみた超イオン伝導体のイオン拡散挙動
从核磁共振观察超离子导体的离子扩散行为
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:佐藤清隆;上野聡;Koichi Nakamura et al.;Koichi Nakamura et al.;Koichi Nakamura et al.;中村浩一 他;Koichi Nakamura et al.;Koichi Nakamura et al.;Koichi Nakamura et al.;中村浩一他;Koichi Nakamura et al.;Koichi Nakamura et al.;中村浩一 他
- 通讯作者:中村浩一 他
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NAKAMURA Koichi其他文献
N-acetylcysteine attenuates PGE2 and ROS production stimulated by 4-META/MMA-based resin in murine osteoblastic cells
N-乙酰半胱氨酸减弱小鼠成骨细胞中 4-META/MMA 基树脂刺激的 PGE2 和 ROS 产生
- DOI:
10.4012/dmj.2020-275 - 发表时间:
2021 - 期刊:
- 影响因子:2.5
- 作者:
NAKAMURA Koichi;MINAMIKAWA Hajime;TAKAHASHI Shizuka;YOSHIMURA Yoshitaka;YAWAKA Yasutaka - 通讯作者:
YAWAKA Yasutaka
NAKAMURA Koichi的其他文献
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{{ truncateString('NAKAMURA Koichi', 18)}}的其他基金
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局部扰动晶体结构和多载流子动力学研究
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19K05003 - 财政年份:2019
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Evaluation system of mathematics lesson to develop mathematics process
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15K04411 - 财政年份:2015
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$ 1.6万 - 项目类别:
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Fundamental research on the material development of high biocompatibility applying tannic acid
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24792128 - 财政年份:2012
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$ 1.6万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
Culture formation of mathematics lesson for student teachers
师范生数学课文化的形成
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24653269 - 财政年份:2012
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$ 1.6万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Study on ion dynamics and change in local structure in transition-metal oxide particles
过渡金属氧化物颗粒中离子动力学和局域结构变化的研究
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21560699 - 财政年份:2009
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$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Study on Lightning Protection of Electric Power Installation, Telecommunication and Home Facility using Natural Winter Lightning to Wind Power Generator and Lightning Tower
电力装置、电信和家庭设施利用冬季自然雷对风力发电机和避雷塔进行防雷研究
- 批准号:
19360134 - 财政年份:2007
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$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Study on disordered structure and ionic diffusion in amorphous solids with non linear ultrasonic resonance
非线性超声共振研究非晶固体中的无序结构和离子扩散
- 批准号:
18540321 - 财政年份:2006
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$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Curriculum Development in Elementary Mathematics Education in terms of Design Research.
设计研究方面的基础数学教育课程开发。
- 批准号:
15500579 - 财政年份:2003
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$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
A Database on Sociocultural Aspects of Journalistic Criticism in the 20th Century English and American Literature
20世纪英美文学新闻批评的社会文化数据库
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14310207 - 财政年份:2002
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$ 1.6万 - 项目类别:
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War and The 19-20th Century Literature
战争与19-20世纪文学
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11410122 - 财政年份:1999
- 资助金额:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (B).
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