Influence of size effects on the Knight shift of NMR lines in the gallium-indium alloy
Influence of size effects on the Knight shift of NMR lines in the gallium-indium alloy
复制标题
尺寸效应对镓铟合金核磁共振谱线奈特位移的影响
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Yu. A. Kumzerov
中科院分区：
文献类型：
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作者：
D. Podorozhkin;E. Charnaya;D. Michel;J. Haase;C. Tien;Man Kit Sam Lee;L. Chang;Yu. A. Kumzerov
本文报道了将组成为90at%Ga和10at%In的液态镓铟合金引入到孔径为5 nm和200 nm的多孔玻璃中的71Ga、69Ga和115In核磁共振线的奈特位移，相对于大块合金中相应的位移。测量是在室温下进行的。这项研究揭示了骑士转变的大小依赖关系的减少。孔径为5 nm的样品在9.4T和17.6T的磁场下测得的镓同位素的奈特移动量有显著差异，这表明在纳米约束条件下熔体的电子磁化率与磁场有关。
A study is reported of the Knight shift of 71Ga, 69Ga, and 115In NMR lines in a liquid gallium-indium alloy with a composition of 90 at % Ga and 10 at % In, introduced into porous glasses with pore sizes of 5 and 200 nm, relative to the corresponding shifts in the bulk alloy. The measurements have been performed at room temperature. The study has revealed a size-dependent decrease in the Knight shift. A sample with a 5-nm pore size has demonstrated a noticeable difference in the magnitudes of the Knight shift of both gallium isotopes measured in magnetic fields of 9.4 and 17.6 T, which implies a dependence of the electronic susceptibility of the melt on the magnetic field under the nanoconfinement conditions.