Abstract
Magnetic studies on the Prussian blue analogues (PBAs) LixCuy[Fe(CN)6]z·mH2O (LiCuFe–PBA) and LijNik[Cr(CN)6]l·nH2O (LiNiCr–PBA), as well as LiCuFe@LiNiCr–PBA core–shell heterostructures, have been conducted under pressures ranging from ambient to ≈1.4GPa and at temperatures of 2–90K. The results for the single component CuFe–PBA indicate robust magnetic properties under the range of pressures studied where a Tc=20K was observed at all pressures. Our pressure studies of single component NiCr–PBA are consistent with previously published results by other workers below 1.0GPa. However, at pressures above 1.0GPa, the decrease in magnetization is accompanied by a decrease in the Tc, an indication of changes in the superexchange value. The results obtained with the single component samples can be mapped onto the observations of the heterostructures.
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