Observation of the Pressure Dependent Reversible Enhancement of Tc and Loss of the Anomalous Constricted Hysteresis for [Ru2(O2CMe)4]3[Cr(CN)6]


  • We thank Kendric J. Nelson (Utah), Konstantin I. Pokhodnya, and Arthur J. Epstein (Ohio State) for helpful discussions, and we gratefully acknowledge the continued partial support by the U.S. Department of Energy Division of Materials Science (Grant Nos. DE-FG03-93ER45504, and DE-FG02-01ER45931), the U.S. Air Force Office of Scientific Research (Grant No. F49620-03-1-0175), and the U.S. National Science Foundation (Grant No. 0553573). Use of the National Synchrotron Light Source, Brookhaven National Laboratory, was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. Supporting Information is available online from Wiley InterScience or from the authors.


original image

The temperature and pressure dependencies of the magnetization, M(T,P), of cubic [Ru2(O2CMe)4]3[Cr(CN)6] reveals that Tc reversibly increases with increasing pressure up to 83 % to 59 K at 12.8 kbar (2.1 K kbar–1), and the pressure dependence of the hysteresis, M(H,P), shows that the anomalous constricted hysteresis observed at ambient pressure disappears at higher pressure (see figure).