| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1996: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1995: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Research Abstract |
Since RCu_2 forms low-symmetric (orthorhombic) CeCu_2-type crystal structure, this system has not been extensively studied comparing with other 1 : 2 compounds between rare earth and transition metal elements. Recently, however, interesting properties were successively found. Although the nuclear magnetic resonance (NMR) is one of the basic methods to investigate the magnetic properties, the application of NMR to the RCu_2 system has not been reported so far. This is because the site symmetry of the Cu site is low, hence needs complicated procedures of the NMR analysis.
The present study is the first systematic study of the Cu NMR for the RCu_2 system and aims to the microscopic discussion of the magnetic properties. For the purpose, we first argued the procedures to analyze the NMR data of low-symmetric crystals. With use of the formalism, we determined magnetic structures and discussed the spin dynamics of some RCu_2 compounds.
Although we tried to measure a number of RCu_2 compounds, we succeeded in extracting significant information of limited samples due to their inherent properties, sample quality, the limitation of the experimental method, and so on. We have summarized only meaningful results.
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