US 7,476,330 B2
Low temperature susceptibility compensation
Thomas M. Barbara, Mountain View, Calif. (US); and Thomas de Swiet, Redwood City, Calif. (US)
Assigned to Varian, Inc., Palo Alto, Calif. (US)
Filed on Sep. 24, 2003, as Appl. No. 10/669,772.
Prior Publication US 2005/0062022 A1, Mar. 24, 2005
Int. Cl. H01B 1/06 (2006.01); G01V 3/00 (2006.01)
U.S. Cl. 252—62.51R  [252/62.57; 252/62.56; 252/500; 252/519.2; 324/321; 324/318; 324/309; 324/305] 8 Claims
OG exemplary drawing
 
1. In a magnetic resonance apparatus for study of a sample, said apparatus comprising the environment surrounding said sample wherein said environment is characterized by a first value of magnetic susceptibility, an amorphous composition comprising an amorphous matrix, a metal ion selected from the group consisting of Gd3 +, Fe+3 and Mn+2, and a ligand, said composition having a value of magnetic susceptibility substantially equal to said first value at cryogenic temperatures.