B. Cage et al., Alkali-metal peroxychromates: Cr(V)-based antiferromagnets with low-dimensional spin exchange and high specific heats, SOL ST COMM, 113(2), 1999, pp. 93-97
The Cr(V) based alkali-metal peroxychromates with the general formula M3CrO
8 (M = Li, Na, K, Rb, Ca) are found to exhibit a variety of interesting the
rmodynamic and magnetic properties. These include: (a) simple molecular str
uctures and single-ion ground states (3d(1)) which depend sensitively on a
specific cation as well as combinations of the cations in a solid solution
(mixed crystals); (b) low dimensionality of the magnetic interactions that
lead to a variety of phase transitions depending on the cation; (c) high sp
ecific heats throughout the liquid helium temperature range; and (d) possib
ility of tuning the thermodynamic properties via dilution with compatible l
attices such as M3NbO8, We envisage possible applications of these compound
s as model systems for the theoretical studies of magnetic chains as well a
s heat sinks and refrigerants in the mK-4 K range. (C) 1999 Elsevier Scienc
e Ltd. All rights reserved.