Nuclear Magnetic Field in Solids Detected with Negative-Muon Spin Rotation and Relaxation

被引：19

作者：

Sugiyama, Jun ^{[1
]}

Umegaki, Izumi ^{[1
]}

Nozaki, Hiroshi ^{[1
]}

Higemoto, Wataru ^{[2
,3
]}

Hamada, Koji ^{[4
]}

Takeshita, Soshi ^{[4
]}

Koda, Akihiro ^{[4
]}

Shimomura, Koichiro ^{[4
]}

Ninomiya, Kazuhiko ^{[5
]}

Kubo, M. Kenya ^{[6
]}

机构：

[1] Toyota Cent Res & Dev Labs Inc, Nagakute, Aichi 4801192, Japan

[2] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[3] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan

[4] High Energy Accelerator Res Org KEK, Tokai, Ibaraki 3191106, Japan

[5] Osaka Univ, Grad Sch Sci, Dept Chem, Osaka 5600054, Japan

[6] Int Christian Univ, Coll Liberal Arts, Dept Nat Sci, Mitaka, Tokyo 1818585, Japan

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 08期

关键词：

HYDROGEN SORPTION; CAPTURE RATES; PRECESSION; KINETICS;

D O I：

10.1103/PhysRevLett.121.087202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using an intense negative muon (mu(-)) source, we have studied the internal magnetic fields in a powder sample of magnesium hydride (MgH2). By extracting the signal from the mu(-) captured on Mg nuclei, we found that the negative muon spin rotation and relaxation (mu-SR) spectra clearly showed a Kubo-Toyabetype relaxation, which indicates a random magnetic field at the Mg site. The field distribution width obtained is very consistent with the predicted value at the Mg site estimated by dipole field calculations, supporting our claim to have observed the nuclear magnetic fields of hydrogens in MgH2. As is the case with mu+SR, mu-SR promises to soon be an indispensable tool for materials analyses.

引用

页数：5

共 34 条

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