Diamagnetic levitation in the fractionally superconducting bile cholates

Diamagnetic levitation similar to that seen in metallic superconductors has been observed in organic compounds; namely, the bile cholates. Levitation phenomena, with forces exceeding 400 lbs/in, occurred in repeated experiments at transition temperatures extablished by susceptibility and resistivity measurements. With crystalline phase change ruled out by X-ray diffraction studies, the observed levitation must be regarded as due to superconductive effects occurring in small domains randomly dispersed throughout the insulating bulk of the investigated cholates. The transition temperatures observed in some of these compounds were higher than those seen in the metals.