Low temperature susceptibility compensation
AssigneeVarian, Inc.
InventorsThomas M. Barbara, Thomas de Swiet
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Abstract
The NMR device with a magnet utilizes a composition exhibiting a desired value of magnetic susceptibility, wherein the composition comprises a metal ion selected from the group consisting of Gd+3, Fe+3 and Mn+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 K.
Claims5
An NMR apparatus comprising a magnet for producing a polarizing field and utilizing a composition subject to said polarizing field, said composition an amorphous comprising a selected amorphous material and a metal ion selected from the group consisting of Gd3+, Fe+3 and Mn+2, and a ligand said composition having a selected value of magnetization at cryogenic temperatures.
Dependencies are inferred from the claim text.