Abstract
NMR measurements have been performed on the ordered perovskite Sr2Cu(Re0.69Ca0.31)O6 which shows ferromagnetic (ferrimagnetic) properties below Tc∼440K with spontaneous magnetization of about 0.25μB per formula unit at 5K. Two kinds of NMR lines showing large enhancement of NMR signals were observed at 5K with H=0.5T at the frequency range from 58 to 180MHz, and each line was attributed to the Cu1 and Cu2 site.
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