The Nuclear Magnetic Resonances of ⁵⁵Mn in RMn₂ and (Y_1−xGd_x)₆Mn₂₃ (R=Gd, Tb, Ho: 0≤x≤1)

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The nuclear magnetic resonances of ⁵⁵Mn nuclei have been observed in the intermetallic compounds RMn₂ and (Y_1−xGd_x)₆Mn₂₃ where R is Gd, Tb, Ho and 0≤x≤1. The Mn moments in these compounds were estimated to be larger (0.8–1.3 μ_B/Mn) than those obtained from the magnetic measurements of R₆Mn₂₃ (0.4 μ_B/Mn). The hyperfine fields at ⁵⁵Mn nuclei in RMn₂ are expressed as the linear relation of (g−1)J. The Gd-contribution to the hyperfine fields at ⁵⁵Mn nuclei in (Y_1−xGd_x)₆Mn₂₃ may be 13 kOe at most.