Purchase of a Squid Magnetometer

North Carolina State University, Raleigh NC

Investigators

Abstract

With this award from the Chemistry Research Instrumentation and Facilities (CRIF) Program, the Department of Chemistry at North Carolina State University will acquire a a Superconducting Quantum Interface Device (SQUID) magnetometer. This equipment will enable researchers to carry out studies on a) synthesis and characterization of open-shell molecules and materials; b) crystalline and liquid crystalline metal halides; c) magnetic susceptibility in metalloproteins; and d) development of novel contrast agents for magnetic resonance imaging. A SQUID magnetometer is critical for studying the magnetic properties of materials, particularly for weakly magnetic/small moment samples. In a DC magnetization measurement, one measures the magnetic moment as a function of applied DC magnetic field (and/or temperature). Using DC magnetization experiments, one can determine magnetic moments or a hysteresis curve, or identify magnetic phase transitions. In such a fashion, complete magnetic characterization of single crystal samples and films is possible. These types of measurements are essential in order to understand polymers and thin films.