Abstract
27Al and55Mn nuclear magnetic resonance shift,K, and27Al spin lattice relaxation time,T 1, have been measured for the six-dimensional face-centered icosahedral quasicrystals, Al75-x Pd15Mn10+x withx=0, 2 and7. The Al75Pd15Mn10 quasicrystal exhibits a temperature independent Knight shiftK and(T 1 T)−1=0.022±0.002 (K s)−1 in a temperature range from room temperature to 5 K because there exist no Mn atoms with local magnetic moment. The replacement of Al with Mn drastically decreases the27AlK, the55MnK andT 1 of27Al, andthe27AlK becomes negative. There is an additional contribution to the spin lattice relaxation time independent of temperature. This is considered to be due to the presence of a localized magnetic moment in the replaced Mn atoms.
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Shinohara, T., Tsai, A.P. & Masumoto, T. Nuclear magnetic resonance in icosahedral Al-Pd-Mn alloys. Hyperfine Interact 78, 515–520 (1993). https://doi.org/10.1007/BF00568185
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DOI: https://doi.org/10.1007/BF00568185