An composition exhibiting a desired value of magnetic susceptibility, which can be used to fabricate components in an NMR device, and method thereof, wherein the composition comprises a metal ion selected from the group consisting of Gd.sup.+3, Fe.sup.+3 and Mn.sup.+2 and an amorphous material using a ligand or chelating agent to solubilize the metal ion throughout the marphous material, wherein the magnetic susceptibility of the composition exhibits a desired value at cryogenic temperatures such as nearly zero susceptibility at temperatures at or below 77.degree. K.

 
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< Nuclear magnetic resonance probe with cooled sample coil

> Magnetic resonance imaging at several RF frequencies

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