Question #120802
Jarosite-type KFe3(SO4)2(OH)6 has a hexagonal crystal structure containing 2-D networks of corner-connected FeO6 octahedra in the a-b plane, stacked and separated from one another along the c-axis.
This compound adopts a complex long-range-ordered antiferromagnetic state below 46 K. However, a fit of the Curie-Weiss law to the linear region of the inverse magnetic susceptibility yields a Weiss temperature (θ) of -600 K. Explain the discrepancy between these two values in terms of the crystal structure and magnetic exchange interactions
This compound adopts a complex long-range-ordered antiferromagnetic state below 46 K. However, a fit of the Curie-Weiss law to the linear region of the inverse magnetic susceptibility yields a Weiss temperature (θ) of -600 K. Explain the discrepancy between these two values in terms of the crystal structure and magnetic exchange interactions
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