TY - JOUR
T1 - Universal thermal response of the Prussian blue lattice
AU - Matsuda, T.
AU - Kim, J. E.
AU - Ohoyama, K.
AU - Moritomo, Y.
PY - 2009/5/1
Y1 - 2009/5/1
N2 - Thermal responses of Prussian blue lattice, that is, a rocksalt-type network of metal ions bridged by cyano group, are systematically investigated for (Cs,Rb) x MII [FeIII (CN) 6] y z H2 O (M=Ni, Cu, Zn, and Cd) and (Cs,Rb) x MIII [FeII (CN) 6] y z H2 O (M=Fe and Co) by means of the synchrotron-radiation x-ray powder diffraction. We found a universal relation between the coefficient (βdlna/dT; a is lattice constant) of the thermal expansion and magnitude of a: β changes the sign from positive to negative with increase in a. We ascribed the negative thermal expansion observed in the large- a region to intrinsic rotational instability of the [Fe (CN) 6] unit.
AB - Thermal responses of Prussian blue lattice, that is, a rocksalt-type network of metal ions bridged by cyano group, are systematically investigated for (Cs,Rb) x MII [FeIII (CN) 6] y z H2 O (M=Ni, Cu, Zn, and Cd) and (Cs,Rb) x MIII [FeII (CN) 6] y z H2 O (M=Fe and Co) by means of the synchrotron-radiation x-ray powder diffraction. We found a universal relation between the coefficient (βdlna/dT; a is lattice constant) of the thermal expansion and magnitude of a: β changes the sign from positive to negative with increase in a. We ascribed the negative thermal expansion observed in the large- a region to intrinsic rotational instability of the [Fe (CN) 6] unit.
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U2 - 10.1103/PhysRevB.79.172302
DO - 10.1103/PhysRevB.79.172302
M3 - Article
AN - SCOPUS:67649403622
VL - 79
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 17
M1 - 172302
ER -