^8^9Y NMR of YBa"2Cu"3O"6"."7"1"0 in the mixed state - Mizuno, K.; Mahajan, A.; Alloul, H.; Saito, T. (Elsevier)
We report NMR width and shift ΔK data of ^8^9Y taken mainly from 2 to 100K in aligned YBa"2Cu"3O"6"."7"1"0 powder. Under the magnetic field of 7.5T applied parallel to the c axis, we have observed motional narrowing of resonance width due to flux-lattice melting between 20K and T"c^ = 61.1K. Non-monotonic temperature dependence of ΔK has been found below T"c, and is explained as an addition of spin-susceptibility shift K"s(T) and demagnetization shift K"d"e"m"a"g(T).
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Keywords: U