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High-Pressure Neutron Scattering of the Magnetoelastic Ni-Cr Prussian Blue Analog



Daniel M Pajerowski, S. E. Conklin, Juscelino Leao, Leland Harriger, D. Phelan


This paper summarizes 0 GPa to 0.6 GPa neutron diffraction measurements of a nickel hexacyanochromate coordination polymer (NiCrPB) that has the face-centered cubic, Prussian blue structure. Deuterated powders of NiCrPB contain approximately equal}100 nm sided cubic particles. The application of a large magnetic field shows the ambient pressure, saturated magnetic structure. Pressures of less than 1 GPa have deviously been show to decrease the magnetic susceptibility by as much as half, and we find modifications to the nuclear crystal structure at these pressures that we quantify. Bridging cyanide molecules isomerize their coordination direction under pressure to change the local ligand field and introduce inhomogeneities in the local (magnetic) anisotropy that act as pinning sites for magnetic domains, thereby reducing the low field magnetic susceptibility.
Physical Review B


coordination polymers, magnetism, magnetoelastic scattering, neutron scattering


Pajerowski, D. , Conklin, S. , Leao, J. , Harriger, L. and Phelan, D. (2015), High-Pressure Neutron Scattering of the Magnetoelastic Ni-Cr Prussian Blue Analog, Physical Review B, [online], (Accessed June 18, 2024)


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Created March 2, 2015, Updated October 12, 2021