isomer were obtained using a SQUID magnetometer at temperatures ranging from 3 to 300 K. For La@C82 the inverse susceptibility as a function of temperature was observed to follow a Curie-Weiss law. The effective magnetic moment per La@C82 was found to be 0.38μB. Lanthanum carbide has also shown superconductive properties when converted into a layered lanthanum carbide halide La2C2X2 (X=Br,I). Investigations using high-resolution neutron powder diffraction measurements from room temperature to 1.5 Kelvin showed that it has superconductive properties at about 7.03 Kelvin for X=Br and at about 1.7 Kelvin for X=I, respectively. References External links MIT Open Courseware 3.091 – Introduction to Solid State Chemistry 2001 US Patent – Carbide nanomaterials. 1997 US Patent – Storage of hydrogen in layered nanostructures. 1996 US Patent – Metal, alloy, or metal carbide nanoparticles and a process for forming same. 1995 US Patent – Magnetic metal or metal carbide nanoparticles and a process for forming same. Carbides Lanthanum compounds Acetylides Electrides