Abstract

A uniaxial pressure technique is developed to study the dependence of the magnetization up to 12 kbar using a SQUID magnetometer. The technique has been tested for the magnetic properties of a Metal-Organic Framework, Co(H2O)6(C10H4O8), where C10H4O8 is benzene-1,2,4,5-tetracarboxylate, along three orthogonal axes of single crystals. It displays anisotropic paramagnetic properties between 2 and 300 K without any phase transition. The isothermal magnetizations at 5 K show decrease with pressure when the field is applied along the b-axis but an increase along the a-and c*-axes. The results are interpreted as a change in the g-value tensor as a function of pressure due to compression along the Jahn-Teller distorted axis.

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